^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Alexander Graf <agraf@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Kevin Wolf <mail@kevin-wolf.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Paul Mackerras <paulus@samba.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Functions relating to running KVM on Book 3S processors where
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * we don't have access to hypervisor mode, and we run the guest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * in problem state (user mode).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * This file is derived from arch/powerpc/kvm/44x.c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * by Hollis Blanchard <hollisb@us.ibm.com>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/kvm_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/reg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <asm/cputable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/cacheflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/kvm_ppc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/kvm_book3s.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <asm/switch_to.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <asm/firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/highmem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <asm/asm-prototypes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <asm/tm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include "book3s.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define CREATE_TRACE_POINTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include "trace_pr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* #define EXIT_DEBUG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /* #define DEBUG_EXT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) ulong msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* Some compatibility defines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #ifdef CONFIG_PPC_BOOK3S_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define MSR_USER32 MSR_USER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define MSR_USER64 MSR_USER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define HW_PAGE_SIZE PAGE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define HPTE_R_M _PAGE_COHERENT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static bool kvmppc_is_split_real(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) ulong msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return (msr & (MSR_IR|MSR_DR)) == MSR_DR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static void kvmppc_fixup_split_real(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ulong msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ulong pc = kvmppc_get_pc(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* We are in DR only split real mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if ((msr & (MSR_IR|MSR_DR)) != MSR_DR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* We have not fixed up the guest already */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* The code is in fixupable address space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (pc & SPLIT_HACK_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) vcpu->arch.hflags |= BOOK3S_HFLAG_SPLIT_HACK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) kvmppc_set_pc(vcpu, pc | SPLIT_HACK_OFFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) ulong pc = kvmppc_get_pc(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ulong lr = kvmppc_get_lr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if ((lr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) kvmppc_set_lr(vcpu, lr & ~SPLIT_HACK_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static void kvmppc_inject_interrupt_pr(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) unsigned long msr, pc, new_msr, new_pc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) kvmppc_unfixup_split_real(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) pc = kvmppc_get_pc(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) new_msr = vcpu->arch.intr_msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) new_pc = to_book3s(vcpu)->hior + vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* If transactional, change to suspend mode on IRQ delivery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (MSR_TM_TRANSACTIONAL(msr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) new_msr |= MSR_TS_S;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) new_msr |= msr & MSR_TS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) kvmppc_set_srr0(vcpu, pc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) kvmppc_set_srr1(vcpu, (msr & SRR1_MSR_BITS) | srr1_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) kvmppc_set_pc(vcpu, new_pc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) kvmppc_set_msr(vcpu, new_msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) memcpy(svcpu->slb, to_book3s(vcpu)->slb_shadow, sizeof(svcpu->slb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) svcpu->slb_max = to_book3s(vcpu)->slb_shadow_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) svcpu->in_use = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) svcpu_put(svcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* Disable AIL if supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (cpu_has_feature(CPU_FTR_HVMODE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) cpu_has_feature(CPU_FTR_ARCH_207S))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) & ~LPCR_AIL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) vcpu->cpu = smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #ifdef CONFIG_PPC_BOOK3S_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) current->thread.kvm_shadow_vcpu = vcpu->arch.shadow_vcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (kvmppc_is_split_real(vcpu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) kvmppc_fixup_split_real(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) kvmppc_restore_tm_pr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (svcpu->in_use) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) kvmppc_copy_from_svcpu(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) memcpy(to_book3s(vcpu)->slb_shadow, svcpu->slb, sizeof(svcpu->slb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) to_book3s(vcpu)->slb_shadow_max = svcpu->slb_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) svcpu_put(svcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (kvmppc_is_split_real(vcpu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) kvmppc_unfixup_split_real(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) kvmppc_save_tm_pr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /* Enable AIL if supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (cpu_has_feature(CPU_FTR_HVMODE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) cpu_has_feature(CPU_FTR_ARCH_207S))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) | LPCR_AIL_3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) vcpu->cpu = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /* Copy data needed by real-mode code from vcpu to shadow vcpu */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) svcpu->gpr[0] = vcpu->arch.regs.gpr[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) svcpu->gpr[1] = vcpu->arch.regs.gpr[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) svcpu->gpr[2] = vcpu->arch.regs.gpr[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) svcpu->gpr[3] = vcpu->arch.regs.gpr[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) svcpu->gpr[4] = vcpu->arch.regs.gpr[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) svcpu->gpr[5] = vcpu->arch.regs.gpr[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) svcpu->gpr[6] = vcpu->arch.regs.gpr[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) svcpu->gpr[7] = vcpu->arch.regs.gpr[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) svcpu->gpr[8] = vcpu->arch.regs.gpr[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) svcpu->gpr[9] = vcpu->arch.regs.gpr[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) svcpu->gpr[10] = vcpu->arch.regs.gpr[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) svcpu->gpr[11] = vcpu->arch.regs.gpr[11];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) svcpu->gpr[12] = vcpu->arch.regs.gpr[12];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) svcpu->gpr[13] = vcpu->arch.regs.gpr[13];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) svcpu->cr = vcpu->arch.regs.ccr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) svcpu->xer = vcpu->arch.regs.xer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) svcpu->ctr = vcpu->arch.regs.ctr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) svcpu->lr = vcpu->arch.regs.link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) svcpu->pc = vcpu->arch.regs.nip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) svcpu->shadow_fscr = vcpu->arch.shadow_fscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * Now also save the current time base value. We use this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * to find the guest purr and spurr value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) vcpu->arch.entry_tb = get_tb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) vcpu->arch.entry_vtb = get_vtb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (cpu_has_feature(CPU_FTR_ARCH_207S))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) vcpu->arch.entry_ic = mfspr(SPRN_IC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) svcpu->in_use = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) svcpu_put(svcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) ulong guest_msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) ulong smsr = guest_msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) /* Guest MSR values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_LE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) MSR_TM | MSR_TS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /* Process MSR values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) smsr |= MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_PR | MSR_EE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /* External providers the guest reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) smsr |= (guest_msr & vcpu->arch.guest_owned_ext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /* 64-bit Process MSR values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) smsr |= MSR_ISF | MSR_HV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * in guest privileged state, we want to fail all TM transactions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * So disable MSR TM bit so that all tbegin. will be able to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * trapped into host.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (!(guest_msr & MSR_PR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) smsr &= ~MSR_TM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) vcpu->arch.shadow_msr = smsr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /* Copy data touched by real-mode code from shadow vcpu back to vcpu */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ulong old_msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * Maybe we were already preempted and synced the svcpu from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * our preempt notifiers. Don't bother touching this svcpu then.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (!svcpu->in_use)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) vcpu->arch.regs.gpr[0] = svcpu->gpr[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) vcpu->arch.regs.gpr[1] = svcpu->gpr[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) vcpu->arch.regs.gpr[2] = svcpu->gpr[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) vcpu->arch.regs.gpr[3] = svcpu->gpr[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) vcpu->arch.regs.gpr[4] = svcpu->gpr[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) vcpu->arch.regs.gpr[5] = svcpu->gpr[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) vcpu->arch.regs.gpr[6] = svcpu->gpr[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) vcpu->arch.regs.gpr[7] = svcpu->gpr[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) vcpu->arch.regs.gpr[8] = svcpu->gpr[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) vcpu->arch.regs.gpr[9] = svcpu->gpr[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) vcpu->arch.regs.gpr[10] = svcpu->gpr[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) vcpu->arch.regs.gpr[11] = svcpu->gpr[11];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) vcpu->arch.regs.gpr[12] = svcpu->gpr[12];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) vcpu->arch.regs.gpr[13] = svcpu->gpr[13];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) vcpu->arch.regs.ccr = svcpu->cr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) vcpu->arch.regs.xer = svcpu->xer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) vcpu->arch.regs.ctr = svcpu->ctr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) vcpu->arch.regs.link = svcpu->lr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) vcpu->arch.regs.nip = svcpu->pc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) vcpu->arch.shadow_srr1 = svcpu->shadow_srr1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) vcpu->arch.fault_dar = svcpu->fault_dar;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) vcpu->arch.fault_dsisr = svcpu->fault_dsisr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) vcpu->arch.last_inst = svcpu->last_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) vcpu->arch.shadow_fscr = svcpu->shadow_fscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * Update purr and spurr using time base on exit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) vcpu->arch.purr += get_tb() - vcpu->arch.entry_tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) vcpu->arch.spurr += get_tb() - vcpu->arch.entry_tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) to_book3s(vcpu)->vtb += get_vtb() - vcpu->arch.entry_vtb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (cpu_has_feature(CPU_FTR_ARCH_207S))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) vcpu->arch.ic += mfspr(SPRN_IC) - vcpu->arch.entry_ic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * Unlike other MSR bits, MSR[TS]bits can be changed at guest without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * notifying host:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * modified by unprivileged instructions like "tbegin"/"tend"/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * "tresume"/"tsuspend" in PR KVM guest.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * It is necessary to sync here to calculate a correct shadow_msr.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * privileged guest's tbegin will be failed at present. So we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * only take care of problem state guest.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) old_msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (unlikely((old_msr & MSR_PR) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) (vcpu->arch.shadow_srr1 & (MSR_TS_MASK)) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) (old_msr & (MSR_TS_MASK)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) old_msr &= ~(MSR_TS_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) old_msr |= (vcpu->arch.shadow_srr1 & (MSR_TS_MASK));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) kvmppc_set_msr_fast(vcpu, old_msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) kvmppc_recalc_shadow_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) svcpu->in_use = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) svcpu_put(svcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) tm_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) vcpu->arch.tfhar = mfspr(SPRN_TFHAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) vcpu->arch.texasr = mfspr(SPRN_TEXASR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) vcpu->arch.tfiar = mfspr(SPRN_TFIAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) tm_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) tm_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) mtspr(SPRN_TFHAR, vcpu->arch.tfhar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) mtspr(SPRN_TEXASR, vcpu->arch.texasr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) mtspr(SPRN_TFIAR, vcpu->arch.tfiar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) tm_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /* loadup math bits which is enabled at kvmppc_get_msr() but not enabled at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static void kvmppc_handle_lost_math_exts(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) ulong exit_nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) ulong ext_diff = (kvmppc_get_msr(vcpu) & ~vcpu->arch.guest_owned_ext) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) (MSR_FP | MSR_VEC | MSR_VSX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (!ext_diff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) if (ext_diff == MSR_FP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) exit_nr = BOOK3S_INTERRUPT_FP_UNAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) else if (ext_diff == MSR_VEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) exit_nr = BOOK3S_INTERRUPT_ALTIVEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) exit_nr = BOOK3S_INTERRUPT_VSX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) kvmppc_handle_ext(vcpu, exit_nr, ext_diff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (!(MSR_TM_ACTIVE(kvmppc_get_msr(vcpu)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) kvmppc_save_tm_sprs(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) kvmppc_giveup_ext(vcpu, MSR_VSX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) _kvmppc_save_tm_pr(vcpu, mfmsr());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!MSR_TM_ACTIVE(kvmppc_get_msr(vcpu))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) kvmppc_restore_tm_sprs(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (kvmppc_get_msr(vcpu) & MSR_TM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) kvmppc_handle_lost_math_exts(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (vcpu->arch.fscr & FSCR_TAR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) kvmppc_handle_fac(vcpu, FSCR_TAR_LG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) _kvmppc_restore_tm_pr(vcpu, kvmppc_get_msr(vcpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (kvmppc_get_msr(vcpu) & MSR_TM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) kvmppc_handle_lost_math_exts(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (vcpu->arch.fscr & FSCR_TAR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) kvmppc_handle_fac(vcpu, FSCR_TAR_LG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) static int kvmppc_core_check_requests_pr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) int r = 1; /* Indicate we want to get back into the guest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) /* We misuse TLB_FLUSH to indicate that we want to clear
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) all shadow cache entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) kvmppc_mmu_pte_flush(vcpu, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /************* MMU Notifiers *************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static void do_kvm_unmap_hva(struct kvm *kvm, unsigned long start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) long i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct kvm_vcpu *vcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct kvm_memslots *slots;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) struct kvm_memory_slot *memslot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) slots = kvm_memslots(kvm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) kvm_for_each_memslot(memslot, slots) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) unsigned long hva_start, hva_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) gfn_t gfn, gfn_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) hva_start = max(start, memslot->userspace_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) hva_end = min(end, memslot->userspace_addr +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) (memslot->npages << PAGE_SHIFT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (hva_start >= hva_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) * {gfn(page) | page intersects with [hva_start, hva_end)} =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * {gfn, gfn+1, ..., gfn_end-1}.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) gfn = hva_to_gfn_memslot(hva_start, memslot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) gfn_end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, memslot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) kvm_for_each_vcpu(i, vcpu, kvm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) kvmppc_mmu_pte_pflush(vcpu, gfn << PAGE_SHIFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) gfn_end << PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) static int kvm_unmap_hva_range_pr(struct kvm *kvm, unsigned long start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) do_kvm_unmap_hva(kvm, start, end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) static int kvm_age_hva_pr(struct kvm *kvm, unsigned long start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) /* XXX could be more clever ;) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) static int kvm_test_age_hva_pr(struct kvm *kvm, unsigned long hva)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) /* XXX could be more clever ;) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static void kvm_set_spte_hva_pr(struct kvm *kvm, unsigned long hva, pte_t pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /* The page will get remapped properly on its next fault */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) do_kvm_unmap_hva(kvm, hva, hva + PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) /*****************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ulong old_msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) /* For PAPR guest, make sure MSR reflects guest mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) if (vcpu->arch.papr_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) msr = (msr & ~MSR_HV) | MSR_ME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) #ifdef EXIT_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) printk(KERN_INFO "KVM: Set MSR to 0x%llx\n", msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) /* We should never target guest MSR to TS=10 && PR=0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) * since we always fail transaction for guest privilege
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) * state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (!(msr & MSR_PR) && MSR_TM_TRANSACTIONAL(msr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) kvmppc_emulate_tabort(vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) TM_CAUSE_KVM_FAC_UNAV | TM_CAUSE_PERSISTENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) old_msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) msr &= to_book3s(vcpu)->msr_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) kvmppc_set_msr_fast(vcpu, msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) kvmppc_recalc_shadow_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (msr & MSR_POW) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (!vcpu->arch.pending_exceptions) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) kvm_vcpu_block(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) kvm_clear_request(KVM_REQ_UNHALT, vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) vcpu->stat.halt_wakeup++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) /* Unset POW bit after we woke up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) msr &= ~MSR_POW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) kvmppc_set_msr_fast(vcpu, msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (kvmppc_is_split_real(vcpu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) kvmppc_fixup_split_real(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) kvmppc_unfixup_split_real(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if ((kvmppc_get_msr(vcpu) & (MSR_PR|MSR_IR|MSR_DR)) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) (old_msr & (MSR_PR|MSR_IR|MSR_DR))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) kvmppc_mmu_flush_segments(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) /* Preload magic page segment when in kernel mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (!(msr & MSR_PR) && vcpu->arch.magic_page_pa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) struct kvm_vcpu_arch *a = &vcpu->arch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (msr & MSR_DR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) kvmppc_mmu_map_segment(vcpu, a->magic_page_ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) kvmppc_mmu_map_segment(vcpu, a->magic_page_pa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * When switching from 32 to 64-bit, we may have a stale 32-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * magic page around, we need to flush it. Typically 32-bit magic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * page will be instantiated when calling into RTAS. Note: We
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) * assume that such transition only happens while in kernel mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) * ie, we never transition from user 32-bit to kernel 64-bit with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * a 32-bit magic page around.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (vcpu->arch.magic_page_pa &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) !(old_msr & MSR_PR) && !(old_msr & MSR_SF) && (msr & MSR_SF)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) /* going from RTAS to normal kernel code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) kvmppc_mmu_pte_flush(vcpu, (uint32_t)vcpu->arch.magic_page_pa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) ~0xFFFUL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) /* Preload FPU if it's enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) if (kvmppc_get_msr(vcpu) & MSR_FP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (kvmppc_get_msr(vcpu) & MSR_TM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) kvmppc_handle_lost_math_exts(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) u32 host_pvr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) vcpu->arch.pvr = pvr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if ((pvr >= 0x330000) && (pvr < 0x70330000)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) kvmppc_mmu_book3s_64_init(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (!to_book3s(vcpu)->hior_explicit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) to_book3s(vcpu)->hior = 0xfff00000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) vcpu->arch.cpu_type = KVM_CPU_3S_64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) kvmppc_mmu_book3s_32_init(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (!to_book3s(vcpu)->hior_explicit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) to_book3s(vcpu)->hior = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) to_book3s(vcpu)->msr_mask = 0xffffffffULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) vcpu->arch.cpu_type = KVM_CPU_3S_32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) kvmppc_sanity_check(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) /* If we are in hypervisor level on 970, we can tell the CPU to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) * treat DCBZ as 32 bytes store */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) vcpu->arch.hflags &= ~BOOK3S_HFLAG_DCBZ32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if (vcpu->arch.mmu.is_dcbz32(vcpu) && (mfmsr() & MSR_HV) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) !strcmp(cur_cpu_spec->platform, "ppc970"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) /* Cell performs badly if MSR_FEx are set. So let's hope nobody
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) really needs them in a VM on Cell and force disable them. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (!strcmp(cur_cpu_spec->platform, "ppc-cell-be"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) to_book3s(vcpu)->msr_mask &= ~(MSR_FE0 | MSR_FE1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * If they're asking for POWER6 or later, set the flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) * indicating that we can do multiple large page sizes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) * and 1TB segments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * Also set the flag that indicates that tlbie has the large
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * page bit in the RB operand instead of the instruction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) switch (PVR_VER(pvr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) case PVR_POWER6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) case PVR_POWER7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) case PVR_POWER7p:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) case PVR_POWER8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) case PVR_POWER8E:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) case PVR_POWER8NVL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) case PVR_POWER9:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) vcpu->arch.hflags |= BOOK3S_HFLAG_MULTI_PGSIZE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) BOOK3S_HFLAG_NEW_TLBIE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) #ifdef CONFIG_PPC_BOOK3S_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) /* 32 bit Book3S always has 32 byte dcbz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) /* On some CPUs we can execute paired single operations natively */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) asm ( "mfpvr %0" : "=r"(host_pvr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) switch (host_pvr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) case 0x00080200: /* lonestar 2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) case 0x00088202: /* lonestar 2.2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) case 0x70000100: /* gekko 1.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) case 0x00080100: /* gekko 2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) case 0x00083203: /* gekko 2.3a */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) case 0x00083213: /* gekko 2.3b */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) case 0x00083204: /* gekko 2.4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) case 0x00087200: /* broadway */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) vcpu->arch.hflags |= BOOK3S_HFLAG_NATIVE_PS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) /* Enable HID2.PSE - in case we need it later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) mtspr(SPRN_HID2_GEKKO, mfspr(SPRN_HID2_GEKKO) | (1 << 29));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) /* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) * make Book3s_32 Linux work on Book3s_64, we have to make sure we trap dcbz to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * emulate 32 bytes dcbz length.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * The Book3s_64 inventors also realized this case and implemented a special bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * in the HID5 register, which is a hypervisor ressource. Thus we can't use it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) * My approach here is to patch the dcbz instruction on executing pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) struct page *hpage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) u64 hpage_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) u32 *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (is_error_page(hpage))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) hpage_offset = pte->raddr & ~PAGE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) hpage_offset &= ~0xFFFULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) hpage_offset /= 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) get_page(hpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) page = kmap_atomic(hpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) /* patch dcbz into reserved instruction, so we trap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if ((be32_to_cpu(page[i]) & 0xff0007ff) == INS_DCBZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) page[i] &= cpu_to_be32(0xfffffff7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) kunmap_atomic(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) put_page(hpage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) static bool kvmppc_visible_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) ulong mp_pa = vcpu->arch.magic_page_pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) if (!(kvmppc_get_msr(vcpu) & MSR_SF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) mp_pa = (uint32_t)mp_pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) gpa &= ~0xFFFULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) if (unlikely(mp_pa) && unlikely((mp_pa & KVM_PAM) == (gpa & KVM_PAM))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) return kvm_is_visible_gfn(vcpu->kvm, gpa >> PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) static int kvmppc_handle_pagefault(struct kvm_vcpu *vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) ulong eaddr, int vec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) bool iswrite = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) int r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) int relocated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) int page_found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) struct kvmppc_pte pte = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) bool dr = (kvmppc_get_msr(vcpu) & MSR_DR) ? true : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) bool ir = (kvmppc_get_msr(vcpu) & MSR_IR) ? true : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) u64 vsid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) relocated = data ? dr : ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (data && (vcpu->arch.fault_dsisr & DSISR_ISSTORE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) iswrite = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) /* Resolve real address if translation turned on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (relocated) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data, iswrite);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) pte.may_execute = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) pte.may_read = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) pte.may_write = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) pte.raddr = eaddr & KVM_PAM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) pte.eaddr = eaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) pte.vpage = eaddr >> 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) pte.page_size = MMU_PAGE_64K;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) pte.wimg = HPTE_R_M;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) switch (kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) case MSR_DR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) if (!data &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) ((pte.raddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) pte.raddr &= ~SPLIT_HACK_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) case MSR_IR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) if ((kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) == MSR_DR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) pte.vpage |= vsid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) if (vsid == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) page_found = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) * If we do the dcbz hack, we have to NX on every execution,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) * so we can patch the executing code. This renders our guest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) * NX-less.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) pte.may_execute = !data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) if (page_found == -ENOENT || page_found == -EPERM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) /* Page not found in guest PTE entries, or protection fault */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) u64 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (page_found == -EPERM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) flags = DSISR_PROTFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) flags = DSISR_NOHPTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) if (data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) flags |= vcpu->arch.fault_dsisr & DSISR_ISSTORE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) kvmppc_core_queue_data_storage(vcpu, eaddr, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) kvmppc_core_queue_inst_storage(vcpu, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) } else if (page_found == -EINVAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) /* Page not found in guest SLB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) } else if (kvmppc_visible_gpa(vcpu, pte.raddr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) if (data && !(vcpu->arch.fault_dsisr & DSISR_NOHPTE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) * There is already a host HPTE there, presumably
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) * a read-only one for a page the guest thinks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) * is writable, so get rid of it first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) kvmppc_mmu_unmap_page(vcpu, &pte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) /* The guest's PTE is not mapped yet. Map on the host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) if (kvmppc_mmu_map_page(vcpu, &pte, iswrite) == -EIO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) /* Exit KVM if mapping failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) return RESUME_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) if (data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) vcpu->stat.sp_storage++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) kvmppc_patch_dcbz(vcpu, &pte);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) /* MMIO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) vcpu->stat.mmio_exits++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) vcpu->arch.paddr_accessed = pte.raddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) vcpu->arch.vaddr_accessed = pte.eaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) r = kvmppc_emulate_mmio(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) if ( r == RESUME_HOST_NV )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) r = RESUME_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) /* Give up external provider (FPU, Altivec, VSX) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) struct thread_struct *t = ¤t->thread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * VSX instructions can access FP and vector registers, so if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) * we are giving up VSX, make sure we give up FP and VMX as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) if (msr & MSR_VSX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) msr |= MSR_FP | MSR_VEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) msr &= vcpu->arch.guest_owned_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) if (!msr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) #ifdef DEBUG_EXT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) printk(KERN_INFO "Giving up ext 0x%lx\n", msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) if (msr & MSR_FP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * Note that on CPUs with VSX, giveup_fpu stores
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) * both the traditional FP registers and the added VSX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) * registers into thread.fp_state.fpr[].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) if (t->regs->msr & MSR_FP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) giveup_fpu(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) t->fp_save_area = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) #ifdef CONFIG_ALTIVEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) if (msr & MSR_VEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if (current->thread.regs->msr & MSR_VEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) giveup_altivec(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) t->vr_save_area = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) vcpu->arch.guest_owned_ext &= ~(msr | MSR_VSX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) kvmppc_recalc_shadow_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) /* Give up facility (TAR / EBB / DSCR) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (!(vcpu->arch.shadow_fscr & (1ULL << fac))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) /* Facility not available to the guest, ignore giveup request*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) switch (fac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) case FSCR_TAR_LG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) vcpu->arch.tar = mfspr(SPRN_TAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) mtspr(SPRN_TAR, current->thread.tar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) vcpu->arch.shadow_fscr &= ~FSCR_TAR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) /* Handle external providers (FPU, Altivec, VSX) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) ulong msr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) struct thread_struct *t = ¤t->thread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) /* When we have paired singles, we emulate in software */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) if (!(kvmppc_get_msr(vcpu) & msr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) if (msr == MSR_VSX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) /* No VSX? Give an illegal instruction interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) #ifdef CONFIG_VSX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) if (!cpu_has_feature(CPU_FTR_VSX))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) * We have to load up all the FP and VMX registers before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) * we can let the guest use VSX instructions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) msr = MSR_FP | MSR_VEC | MSR_VSX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) /* See if we already own all the ext(s) needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) msr &= ~vcpu->arch.guest_owned_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (!msr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) #ifdef DEBUG_EXT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) printk(KERN_INFO "Loading up ext 0x%lx\n", msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (msr & MSR_FP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) enable_kernel_fp();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) load_fp_state(&vcpu->arch.fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) disable_kernel_fp();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) t->fp_save_area = &vcpu->arch.fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) if (msr & MSR_VEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) #ifdef CONFIG_ALTIVEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) enable_kernel_altivec();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) load_vr_state(&vcpu->arch.vr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) disable_kernel_altivec();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) t->vr_save_area = &vcpu->arch.vr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) t->regs->msr |= msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) vcpu->arch.guest_owned_ext |= msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) kvmppc_recalc_shadow_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) * Kernel code using FP or VMX could have flushed guest state to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) * the thread_struct; if so, get it back now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) unsigned long lost_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) lost_ext = vcpu->arch.guest_owned_ext & ~current->thread.regs->msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) if (!lost_ext)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) if (lost_ext & MSR_FP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) enable_kernel_fp();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) load_fp_state(&vcpu->arch.fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) disable_kernel_fp();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) #ifdef CONFIG_ALTIVEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) if (lost_ext & MSR_VEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) enable_kernel_altivec();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) load_vr_state(&vcpu->arch.vr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) disable_kernel_altivec();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) current->thread.regs->msr |= lost_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) /* Inject the Interrupt Cause field and trigger a guest interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) vcpu->arch.fscr &= ~(0xffULL << 56);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) vcpu->arch.fscr |= (fac << 56);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FAC_UNAVAIL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) static void kvmppc_emulate_fac(struct kvm_vcpu *vcpu, ulong fac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) enum emulation_result er = EMULATE_FAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) if (!(kvmppc_get_msr(vcpu) & MSR_PR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) er = kvmppc_emulate_instruction(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) if ((er != EMULATE_DONE) && (er != EMULATE_AGAIN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) /* Couldn't emulate, trigger interrupt in guest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) kvmppc_trigger_fac_interrupt(vcpu, fac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) /* Enable facilities (TAR, EBB, DSCR) for the guest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) bool guest_fac_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) BUG_ON(!cpu_has_feature(CPU_FTR_ARCH_207S));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) * Not every facility is enabled by FSCR bits, check whether the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) * guest has this facility enabled at all.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) switch (fac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) case FSCR_TAR_LG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) case FSCR_EBB_LG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) guest_fac_enabled = (vcpu->arch.fscr & (1ULL << fac));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) case FSCR_TM_LG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) guest_fac_enabled = kvmppc_get_msr(vcpu) & MSR_TM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) guest_fac_enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) if (!guest_fac_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) /* Facility not enabled by the guest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) kvmppc_trigger_fac_interrupt(vcpu, fac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) switch (fac) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) case FSCR_TAR_LG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) /* TAR switching isn't lazy in Linux yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) current->thread.tar = mfspr(SPRN_TAR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) mtspr(SPRN_TAR, vcpu->arch.tar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) vcpu->arch.shadow_fscr |= FSCR_TAR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) kvmppc_emulate_fac(vcpu, fac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) /* Since we disabled MSR_TM at privilege state, the mfspr instruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) * for TM spr can trigger TM fac unavailable. In this case, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) * emulation is handled by kvmppc_emulate_fac(), which invokes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) * kvmppc_emulate_mfspr() finally. But note the mfspr can include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) * RT for NV registers. So it need to restore those NV reg to reflect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) * the update.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) if ((fac == FSCR_TM_LG) && !(kvmppc_get_msr(vcpu) & MSR_PR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) return RESUME_GUEST_NV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) if ((vcpu->arch.fscr & FSCR_TAR) && !(fscr & FSCR_TAR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) /* TAR got dropped, drop it in shadow too */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) } else if (!(vcpu->arch.fscr & FSCR_TAR) && (fscr & FSCR_TAR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) vcpu->arch.fscr = fscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) kvmppc_handle_fac(vcpu, FSCR_TAR_LG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) vcpu->arch.fscr = fscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) static void kvmppc_setup_debug(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) u64 msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) kvmppc_set_msr(vcpu, msr | MSR_SE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) static void kvmppc_clear_debug(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) u64 msr = kvmppc_get_msr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) kvmppc_set_msr(vcpu, msr & ~MSR_SE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) static int kvmppc_exit_pr_progint(struct kvm_vcpu *vcpu, unsigned int exit_nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) enum emulation_result er;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) ulong flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) u32 last_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) int emul, r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) * shadow_srr1 only contains valid flags if we came here via a program
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) * exception. The other exceptions (emulation assist, FP unavailable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) * etc.) do not provide flags in SRR1, so use an illegal-instruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) * exception when injecting a program interrupt into the guest.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) if (exit_nr == BOOK3S_INTERRUPT_PROGRAM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) flags = vcpu->arch.shadow_srr1 & 0x1f0000ull;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) flags = SRR1_PROGILL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) if (emul != EMULATE_DONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) if (kvmppc_get_msr(vcpu) & MSR_PR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) #ifdef EXIT_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) pr_info("Userspace triggered 0x700 exception at\n 0x%lx (0x%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) kvmppc_get_pc(vcpu), last_inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) if ((last_inst & 0xff0007ff) != (INS_DCBZ & 0xfffffff7)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) kvmppc_core_queue_program(vcpu, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) return RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) vcpu->stat.emulated_inst_exits++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) er = kvmppc_emulate_instruction(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) switch (er) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) case EMULATE_DONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) r = RESUME_GUEST_NV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) case EMULATE_AGAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) case EMULATE_FAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) pr_crit("%s: emulation at %lx failed (%08x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) __func__, kvmppc_get_pc(vcpu), last_inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) kvmppc_core_queue_program(vcpu, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) case EMULATE_DO_MMIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) vcpu->run->exit_reason = KVM_EXIT_MMIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) r = RESUME_HOST_NV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) case EMULATE_EXIT_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) r = RESUME_HOST_NV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) struct kvm_run *run = vcpu->run;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) int r = RESUME_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) int s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) vcpu->stat.sum_exits++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) run->exit_reason = KVM_EXIT_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) run->ready_for_interrupt_injection = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) /* We get here with MSR.EE=1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) trace_kvm_exit(exit_nr, vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) guest_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) switch (exit_nr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) case BOOK3S_INTERRUPT_INST_STORAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) ulong shadow_srr1 = vcpu->arch.shadow_srr1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) vcpu->stat.pf_instruc++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) if (kvmppc_is_split_real(vcpu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) kvmppc_fixup_split_real(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) #ifdef CONFIG_PPC_BOOK3S_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) /* We set segments as unused segments when invalidating them. So
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) * treat the respective fault as segment fault. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) struct kvmppc_book3s_shadow_vcpu *svcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) u32 sr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) svcpu = svcpu_get(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) sr = svcpu->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) svcpu_put(svcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) if (sr == SR_INVALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) /* only care about PTEG not found errors, but leave NX alone */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) if (shadow_srr1 & 0x40000000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) int idx = srcu_read_lock(&vcpu->kvm->srcu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) r = kvmppc_handle_pagefault(vcpu, kvmppc_get_pc(vcpu), exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) srcu_read_unlock(&vcpu->kvm->srcu, idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) vcpu->stat.sp_instruc++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) } else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) * XXX If we do the dcbz hack we use the NX bit to flush&patch the page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) * so we can't use the NX bit inside the guest. Let's cross our fingers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) * that no guest that needs the dcbz hack does NX.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) kvmppc_core_queue_inst_storage(vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) shadow_srr1 & 0x58000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) case BOOK3S_INTERRUPT_DATA_STORAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) ulong dar = kvmppc_get_fault_dar(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) u32 fault_dsisr = vcpu->arch.fault_dsisr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) vcpu->stat.pf_storage++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) #ifdef CONFIG_PPC_BOOK3S_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) /* We set segments as unused segments when invalidating them. So
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) * treat the respective fault as segment fault. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) struct kvmppc_book3s_shadow_vcpu *svcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) u32 sr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) svcpu = svcpu_get(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) sr = svcpu->sr[dar >> SID_SHIFT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) svcpu_put(svcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) if (sr == SR_INVALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) kvmppc_mmu_map_segment(vcpu, dar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) * We need to handle missing shadow PTEs, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) * protection faults due to us mapping a page read-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) * when the guest thinks it is writable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) if (fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) int idx = srcu_read_lock(&vcpu->kvm->srcu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) r = kvmppc_handle_pagefault(vcpu, dar, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) srcu_read_unlock(&vcpu->kvm->srcu, idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) kvmppc_core_queue_data_storage(vcpu, dar, fault_dsisr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) case BOOK3S_INTERRUPT_DATA_SEGMENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) kvmppc_book3s_queue_irqprio(vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) BOOK3S_INTERRUPT_DATA_SEGMENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) case BOOK3S_INTERRUPT_INST_SEGMENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) kvmppc_book3s_queue_irqprio(vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) BOOK3S_INTERRUPT_INST_SEGMENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) /* We're good on these - the host merely wanted to get our attention */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) case BOOK3S_INTERRUPT_DECREMENTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) case BOOK3S_INTERRUPT_HV_DECREMENTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) case BOOK3S_INTERRUPT_DOORBELL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) case BOOK3S_INTERRUPT_H_DOORBELL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) vcpu->stat.dec_exits++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) case BOOK3S_INTERRUPT_EXTERNAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) case BOOK3S_INTERRUPT_EXTERNAL_HV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) case BOOK3S_INTERRUPT_H_VIRT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) vcpu->stat.ext_intr_exits++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) case BOOK3S_INTERRUPT_HMI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) case BOOK3S_INTERRUPT_PERFMON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) case BOOK3S_INTERRUPT_SYSTEM_RESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) case BOOK3S_INTERRUPT_PROGRAM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) case BOOK3S_INTERRUPT_H_EMUL_ASSIST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) r = kvmppc_exit_pr_progint(vcpu, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) case BOOK3S_INTERRUPT_SYSCALL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) u32 last_sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) int emul;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) /* Get last sc for papr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) if (vcpu->arch.papr_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) /* The sc instuction points SRR0 to the next inst */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) emul = kvmppc_get_last_inst(vcpu, INST_SC, &last_sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) if (emul != EMULATE_DONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) - 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) if (vcpu->arch.papr_enabled &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) (last_sc == 0x44000022) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) !(kvmppc_get_msr(vcpu) & MSR_PR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) /* SC 1 papr hypercalls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) ulong cmd = kvmppc_get_gpr(vcpu, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) run->papr_hcall.nr = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) for (i = 0; i < 9; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) ulong gpr = kvmppc_get_gpr(vcpu, 4 + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) run->papr_hcall.args[i] = gpr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) run->exit_reason = KVM_EXIT_PAPR_HCALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) vcpu->arch.hcall_needed = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) r = RESUME_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) } else if (vcpu->arch.osi_enabled &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) (((u32)kvmppc_get_gpr(vcpu, 3)) == OSI_SC_MAGIC_R3) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) (((u32)kvmppc_get_gpr(vcpu, 4)) == OSI_SC_MAGIC_R4)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) /* MOL hypercalls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) u64 *gprs = run->osi.gprs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) run->exit_reason = KVM_EXIT_OSI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) for (i = 0; i < 32; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) gprs[i] = kvmppc_get_gpr(vcpu, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) vcpu->arch.osi_needed = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) r = RESUME_HOST_NV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) } else if (!(kvmppc_get_msr(vcpu) & MSR_PR) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) /* KVM PV hypercalls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) /* Guest syscalls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) vcpu->stat.syscall_exits++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) case BOOK3S_INTERRUPT_FP_UNAVAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) case BOOK3S_INTERRUPT_ALTIVEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) case BOOK3S_INTERRUPT_VSX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) int ext_msr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) int emul;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) u32 last_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) /* Do paired single instruction emulation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) emul = kvmppc_get_last_inst(vcpu, INST_GENERIC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) &last_inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) if (emul == EMULATE_DONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) r = kvmppc_exit_pr_progint(vcpu, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) /* Enable external provider */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) switch (exit_nr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) case BOOK3S_INTERRUPT_FP_UNAVAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) ext_msr = MSR_FP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) case BOOK3S_INTERRUPT_ALTIVEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) ext_msr = MSR_VEC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) case BOOK3S_INTERRUPT_VSX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) ext_msr = MSR_VSX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) r = kvmppc_handle_ext(vcpu, exit_nr, ext_msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) case BOOK3S_INTERRUPT_ALIGNMENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) u32 last_inst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) int emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) if (emul == EMULATE_DONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) u32 dsisr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) u64 dar;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) dsisr = kvmppc_alignment_dsisr(vcpu, last_inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) dar = kvmppc_alignment_dar(vcpu, last_inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) kvmppc_set_dsisr(vcpu, dsisr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) kvmppc_set_dar(vcpu, dar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) case BOOK3S_INTERRUPT_FAC_UNAVAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) r = kvmppc_handle_fac(vcpu, vcpu->arch.shadow_fscr >> 56);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) case BOOK3S_INTERRUPT_MACHINE_CHECK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) case BOOK3S_INTERRUPT_TRACE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) run->exit_reason = KVM_EXIT_DEBUG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) r = RESUME_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) r = RESUME_GUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) ulong shadow_srr1 = vcpu->arch.shadow_srr1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) /* Ugh - bork here! What did we get? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) exit_nr, kvmppc_get_pc(vcpu), shadow_srr1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) r = RESUME_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) if (!(r & RESUME_HOST)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) /* To avoid clobbering exit_reason, only check for signals if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) * we aren't already exiting to userspace for some other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) * reason. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) * Interrupts could be timers for the guest which we have to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) * inject again, so let's postpone them until we're in the guest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) * and if we really did time things so badly, then we just exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) * again due to a host external interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) s = kvmppc_prepare_to_enter(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) if (s <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) r = s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) /* interrupts now hard-disabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) kvmppc_fix_ee_before_entry();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) kvmppc_handle_lost_ext(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) trace_kvm_book3s_reenter(r, vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) static int kvm_arch_vcpu_ioctl_get_sregs_pr(struct kvm_vcpu *vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) struct kvm_sregs *sregs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) sregs->pvr = vcpu->arch.pvr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) for (i = 0; i < 64; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige | i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) for (i = 0; i < 16; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) sregs->u.s.ppc32.sr[i] = kvmppc_get_sr(vcpu, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) for (i = 0; i < 8; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) static int kvm_arch_vcpu_ioctl_set_sregs_pr(struct kvm_vcpu *vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) struct kvm_sregs *sregs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) kvmppc_set_pvr_pr(vcpu, sregs->pvr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) vcpu3s->sdr1 = sregs->u.s.sdr1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) /* Flush all SLB entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) vcpu->arch.mmu.slbmte(vcpu, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) vcpu->arch.mmu.slbia(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) for (i = 0; i < 64; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) u64 rb = sregs->u.s.ppc64.slb[i].slbe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) u64 rs = sregs->u.s.ppc64.slb[i].slbv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) if (rb & SLB_ESID_V)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) vcpu->arch.mmu.slbmte(vcpu, rs, rb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) for (i = 0; i < 16; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) for (i = 0; i < 8; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) (u32)sregs->u.s.ppc32.ibat[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) (u32)(sregs->u.s.ppc32.ibat[i] >> 32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) (u32)sregs->u.s.ppc32.dbat[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) (u32)(sregs->u.s.ppc32.dbat[i] >> 32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) /* Flush the MMU after messing with the segments */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) kvmppc_mmu_pte_flush(vcpu, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) union kvmppc_one_reg *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) int r = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) switch (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) case KVM_REG_PPC_DEBUG_INST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) case KVM_REG_PPC_HIOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) *val = get_reg_val(id, to_book3s(vcpu)->hior);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) case KVM_REG_PPC_VTB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) *val = get_reg_val(id, to_book3s(vcpu)->vtb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) case KVM_REG_PPC_LPCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) case KVM_REG_PPC_LPCR_64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) * We are only interested in the LPCR_ILE bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) if (vcpu->arch.intr_msr & MSR_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) *val = get_reg_val(id, LPCR_ILE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) *val = get_reg_val(id, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) case KVM_REG_PPC_TFHAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) *val = get_reg_val(id, vcpu->arch.tfhar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) case KVM_REG_PPC_TFIAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) *val = get_reg_val(id, vcpu->arch.tfiar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) case KVM_REG_PPC_TEXASR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) *val = get_reg_val(id, vcpu->arch.texasr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) case KVM_REG_PPC_TM_GPR0 ... KVM_REG_PPC_TM_GPR31:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) *val = get_reg_val(id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) vcpu->arch.gpr_tm[id-KVM_REG_PPC_TM_GPR0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) case KVM_REG_PPC_TM_VSR0 ... KVM_REG_PPC_TM_VSR63:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) i = id - KVM_REG_PPC_TM_VSR0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) if (i < 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) for (j = 0; j < TS_FPRWIDTH; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) val->vsxval[j] = vcpu->arch.fp_tm.fpr[i][j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) if (cpu_has_feature(CPU_FTR_ALTIVEC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) val->vval = vcpu->arch.vr_tm.vr[i-32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) r = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) case KVM_REG_PPC_TM_CR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) *val = get_reg_val(id, vcpu->arch.cr_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) case KVM_REG_PPC_TM_XER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) *val = get_reg_val(id, vcpu->arch.xer_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) case KVM_REG_PPC_TM_LR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) *val = get_reg_val(id, vcpu->arch.lr_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) case KVM_REG_PPC_TM_CTR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) *val = get_reg_val(id, vcpu->arch.ctr_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) case KVM_REG_PPC_TM_FPSCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) *val = get_reg_val(id, vcpu->arch.fp_tm.fpscr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) case KVM_REG_PPC_TM_AMR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) *val = get_reg_val(id, vcpu->arch.amr_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) case KVM_REG_PPC_TM_PPR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) *val = get_reg_val(id, vcpu->arch.ppr_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) case KVM_REG_PPC_TM_VRSAVE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) *val = get_reg_val(id, vcpu->arch.vrsave_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) case KVM_REG_PPC_TM_VSCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) if (cpu_has_feature(CPU_FTR_ALTIVEC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) *val = get_reg_val(id, vcpu->arch.vr_tm.vscr.u[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) r = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) case KVM_REG_PPC_TM_DSCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) *val = get_reg_val(id, vcpu->arch.dscr_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) case KVM_REG_PPC_TM_TAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) *val = get_reg_val(id, vcpu->arch.tar_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) r = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) static void kvmppc_set_lpcr_pr(struct kvm_vcpu *vcpu, u64 new_lpcr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) if (new_lpcr & LPCR_ILE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) vcpu->arch.intr_msr |= MSR_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) vcpu->arch.intr_msr &= ~MSR_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) union kvmppc_one_reg *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) int r = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) switch (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) case KVM_REG_PPC_HIOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) to_book3s(vcpu)->hior = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) to_book3s(vcpu)->hior_explicit = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) case KVM_REG_PPC_VTB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) to_book3s(vcpu)->vtb = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) case KVM_REG_PPC_LPCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) case KVM_REG_PPC_LPCR_64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) kvmppc_set_lpcr_pr(vcpu, set_reg_val(id, *val));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) case KVM_REG_PPC_TFHAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) vcpu->arch.tfhar = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) case KVM_REG_PPC_TFIAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) vcpu->arch.tfiar = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) case KVM_REG_PPC_TEXASR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) vcpu->arch.texasr = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) case KVM_REG_PPC_TM_GPR0 ... KVM_REG_PPC_TM_GPR31:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) vcpu->arch.gpr_tm[id - KVM_REG_PPC_TM_GPR0] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) case KVM_REG_PPC_TM_VSR0 ... KVM_REG_PPC_TM_VSR63:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) i = id - KVM_REG_PPC_TM_VSR0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) if (i < 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) for (j = 0; j < TS_FPRWIDTH; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) vcpu->arch.fp_tm.fpr[i][j] = val->vsxval[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) if (cpu_has_feature(CPU_FTR_ALTIVEC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) vcpu->arch.vr_tm.vr[i-32] = val->vval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) r = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) case KVM_REG_PPC_TM_CR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) vcpu->arch.cr_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) case KVM_REG_PPC_TM_XER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) vcpu->arch.xer_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) case KVM_REG_PPC_TM_LR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) vcpu->arch.lr_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) case KVM_REG_PPC_TM_CTR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) vcpu->arch.ctr_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) case KVM_REG_PPC_TM_FPSCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) vcpu->arch.fp_tm.fpscr = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) case KVM_REG_PPC_TM_AMR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) vcpu->arch.amr_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) case KVM_REG_PPC_TM_PPR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) vcpu->arch.ppr_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) case KVM_REG_PPC_TM_VRSAVE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) vcpu->arch.vrsave_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) case KVM_REG_PPC_TM_VSCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) if (cpu_has_feature(CPU_FTR_ALTIVEC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) vcpu->arch.vr.vscr.u[3] = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) r = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) case KVM_REG_PPC_TM_DSCR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) vcpu->arch.dscr_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) case KVM_REG_PPC_TM_TAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) vcpu->arch.tar_tm = set_reg_val(id, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) r = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) static int kvmppc_core_vcpu_create_pr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) struct kvmppc_vcpu_book3s *vcpu_book3s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) unsigned long p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) if (!vcpu_book3s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) vcpu->arch.book3s = vcpu_book3s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) vcpu->arch.shadow_vcpu =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) kzalloc(sizeof(*vcpu->arch.shadow_vcpu), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) if (!vcpu->arch.shadow_vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) goto free_vcpu3s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) p = __get_free_page(GFP_KERNEL|__GFP_ZERO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) goto free_shadow_vcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) vcpu->arch.shared = (void *)p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) /* Always start the shared struct in native endian mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) #ifdef __BIG_ENDIAN__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) vcpu->arch.shared_big_endian = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) vcpu->arch.shared_big_endian = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) * Default to the same as the host if we're on sufficiently
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) * recent machine that we have 1TB segments;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) * otherwise default to PPC970FX.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) vcpu->arch.pvr = 0x3C0301;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) if (mmu_has_feature(MMU_FTR_1T_SEGMENT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) vcpu->arch.pvr = mfspr(SPRN_PVR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) vcpu->arch.intr_msr = MSR_SF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) /* default to book3s_32 (750) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) vcpu->arch.pvr = 0x84202;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) vcpu->arch.intr_msr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) kvmppc_set_pvr_pr(vcpu, vcpu->arch.pvr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) vcpu->arch.slb_nr = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) vcpu->arch.shadow_msr = MSR_USER64 & ~MSR_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) err = kvmppc_mmu_init_pr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) goto free_shared_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) free_shared_page:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) free_page((unsigned long)vcpu->arch.shared);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) free_shadow_vcpu:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) kfree(vcpu->arch.shadow_vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) free_vcpu3s:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) vfree(vcpu_book3s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) kvmppc_mmu_destroy_pr(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) free_page((unsigned long)vcpu->arch.shared & PAGE_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) kfree(vcpu->arch.shadow_vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) vfree(vcpu_book3s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) static int kvmppc_vcpu_run_pr(struct kvm_vcpu *vcpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) /* Check if we can run the vcpu at all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) if (!vcpu->arch.sane) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) kvmppc_setup_debug(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) * Interrupts could be timers for the guest which we have to inject
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) * again, so let's postpone them until we're in the guest and if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) * really did time things so badly, then we just exit again due to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) * a host external interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) ret = kvmppc_prepare_to_enter(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) if (ret <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) /* interrupts now hard-disabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) /* Save FPU, Altivec and VSX state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) giveup_all(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) /* Preload FPU if it's enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) if (kvmppc_get_msr(vcpu) & MSR_FP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) kvmppc_fix_ee_before_entry();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) ret = __kvmppc_vcpu_run(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) kvmppc_clear_debug(vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) /* No need for guest_exit. It's done in handle_exit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) We also get here with interrupts enabled. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) /* Make sure we save the guest FPU/Altivec/VSX state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) /* Make sure we save the guest TAR/EBB/DSCR state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) vcpu->mode = OUTSIDE_GUEST_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) * Get (and clear) the dirty memory log for a memory slot.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) static int kvm_vm_ioctl_get_dirty_log_pr(struct kvm *kvm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) struct kvm_dirty_log *log)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) struct kvm_memory_slot *memslot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) struct kvm_vcpu *vcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) ulong ga, ga_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) int is_dirty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) unsigned long n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) mutex_lock(&kvm->slots_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) r = kvm_get_dirty_log(kvm, log, &is_dirty, &memslot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) if (r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) /* If nothing is dirty, don't bother messing with page tables. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) if (is_dirty) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) ga = memslot->base_gfn << PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) ga_end = ga + (memslot->npages << PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) kvm_for_each_vcpu(n, vcpu, kvm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) kvmppc_mmu_pte_pflush(vcpu, ga, ga_end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) n = kvm_dirty_bitmap_bytes(memslot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) memset(memslot->dirty_bitmap, 0, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) r = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) mutex_unlock(&kvm->slots_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) static void kvmppc_core_flush_memslot_pr(struct kvm *kvm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) struct kvm_memory_slot *memslot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) static int kvmppc_core_prepare_memory_region_pr(struct kvm *kvm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) struct kvm_memory_slot *memslot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) const struct kvm_userspace_memory_region *mem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) enum kvm_mr_change change)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) static void kvmppc_core_commit_memory_region_pr(struct kvm *kvm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) const struct kvm_userspace_memory_region *mem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) const struct kvm_memory_slot *old,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) const struct kvm_memory_slot *new,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) enum kvm_mr_change change)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) static void kvmppc_core_free_memslot_pr(struct kvm_memory_slot *slot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) struct kvm_ppc_smmu_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) long int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) struct kvm_vcpu *vcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) info->flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) /* SLB is always 64 entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) info->slb_size = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) /* Standard 4k base page size segment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) info->sps[0].page_shift = 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) info->sps[0].slb_enc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) info->sps[0].enc[0].page_shift = 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) info->sps[0].enc[0].pte_enc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) * 64k large page size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) * We only want to put this in if the CPUs we're emulating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) * support it, but unfortunately we don't have a vcpu easily
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) * to hand here to test. Just pick the first vcpu, and if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) * that doesn't exist yet, report the minimum capability,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) * i.e., no 64k pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) * 1T segment support goes along with 64k pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) i = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) vcpu = kvm_get_vcpu(kvm, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) if (vcpu && (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) info->flags = KVM_PPC_1T_SEGMENTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) info->sps[i].page_shift = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) info->sps[i].slb_enc = SLB_VSID_L | SLB_VSID_LP_01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) info->sps[i].enc[0].page_shift = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) info->sps[i].enc[0].pte_enc = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) ++i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) /* Standard 16M large page size segment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) info->sps[i].page_shift = 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) info->sps[i].slb_enc = SLB_VSID_L;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) info->sps[i].enc[0].page_shift = 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) info->sps[i].enc[0].pte_enc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) static int kvm_configure_mmu_pr(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) if (!cpu_has_feature(CPU_FTR_ARCH_300))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) /* Require flags and process table base and size to all be zero. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) if (cfg->flags || cfg->process_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) struct kvm_ppc_smmu_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) /* We should not get called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) #endif /* CONFIG_PPC64 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) static unsigned int kvm_global_user_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) static DEFINE_SPINLOCK(kvm_global_user_count_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) static int kvmppc_core_init_vm_pr(struct kvm *kvm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) mutex_init(&kvm->arch.hpt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) /* Start out with the default set of hcalls enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) kvmppc_pr_init_default_hcalls(kvm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) spin_lock(&kvm_global_user_count_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) if (++kvm_global_user_count == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) pseries_disable_reloc_on_exc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) spin_unlock(&kvm_global_user_count_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) static void kvmppc_core_destroy_vm_pr(struct kvm *kvm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) spin_lock(&kvm_global_user_count_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) BUG_ON(kvm_global_user_count == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) if (--kvm_global_user_count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) pseries_enable_reloc_on_exc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) spin_unlock(&kvm_global_user_count_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) static int kvmppc_core_check_processor_compat_pr(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) * PR KVM can work on POWER9 inside a guest partition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) * running in HPT mode. It can't work if we are using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) * radix translation (because radix provides no way for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) * a process to have unique translations in quadrant 3).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) if (cpu_has_feature(CPU_FTR_ARCH_300) && radix_enabled())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) static long kvm_arch_vm_ioctl_pr(struct file *filp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) unsigned int ioctl, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) return -ENOTTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) static struct kvmppc_ops kvm_ops_pr = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) .get_sregs = kvm_arch_vcpu_ioctl_get_sregs_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) .set_sregs = kvm_arch_vcpu_ioctl_set_sregs_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) .get_one_reg = kvmppc_get_one_reg_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) .set_one_reg = kvmppc_set_one_reg_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) .vcpu_load = kvmppc_core_vcpu_load_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) .vcpu_put = kvmppc_core_vcpu_put_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) .inject_interrupt = kvmppc_inject_interrupt_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) .set_msr = kvmppc_set_msr_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) .vcpu_run = kvmppc_vcpu_run_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) .vcpu_create = kvmppc_core_vcpu_create_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) .vcpu_free = kvmppc_core_vcpu_free_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) .check_requests = kvmppc_core_check_requests_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) .get_dirty_log = kvm_vm_ioctl_get_dirty_log_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) .flush_memslot = kvmppc_core_flush_memslot_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) .prepare_memory_region = kvmppc_core_prepare_memory_region_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) .commit_memory_region = kvmppc_core_commit_memory_region_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) .unmap_hva_range = kvm_unmap_hva_range_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) .age_hva = kvm_age_hva_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) .test_age_hva = kvm_test_age_hva_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) .set_spte_hva = kvm_set_spte_hva_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) .free_memslot = kvmppc_core_free_memslot_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) .init_vm = kvmppc_core_init_vm_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) .destroy_vm = kvmppc_core_destroy_vm_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) .get_smmu_info = kvm_vm_ioctl_get_smmu_info_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) .emulate_op = kvmppc_core_emulate_op_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) .emulate_mtspr = kvmppc_core_emulate_mtspr_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) .emulate_mfspr = kvmppc_core_emulate_mfspr_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) .fast_vcpu_kick = kvm_vcpu_kick,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) .arch_vm_ioctl = kvm_arch_vm_ioctl_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) .hcall_implemented = kvmppc_hcall_impl_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) .configure_mmu = kvm_configure_mmu_pr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) .giveup_ext = kvmppc_giveup_ext,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) int kvmppc_book3s_init_pr(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) r = kvmppc_core_check_processor_compat_pr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) if (r < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) kvm_ops_pr.owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) kvmppc_pr_ops = &kvm_ops_pr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) r = kvmppc_mmu_hpte_sysinit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) void kvmppc_book3s_exit_pr(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) kvmppc_pr_ops = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) kvmppc_mmu_hpte_sysexit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) * We only support separate modules for book3s 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) #ifdef CONFIG_PPC_BOOK3S_64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) module_init(kvmppc_book3s_init_pr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) module_exit(kvmppc_book3s_exit_pr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) MODULE_ALIAS_MISCDEV(KVM_MINOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) MODULE_ALIAS("devname:kvm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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