^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * vcpu.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * VCPU initialisation, query, and hotplug.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Permission is hereby granted, free of charge, to any person obtaining a copy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * of this software and associated documentation files (the "Software"), to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * deal in the Software without restriction, including without limitation the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * sell copies of the Software, and to permit persons to whom the Software is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * furnished to do so, subject to the following conditions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * The above copyright notice and this permission notice shall be included in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * all copies or substantial portions of the Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * DEALINGS IN THE SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #ifndef __XEN_PUBLIC_VCPU_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define __XEN_PUBLIC_VCPU_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * Prototype for this hypercall is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * int vcpu_op(int cmd, int vcpuid, void *extra_args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * @cmd == VCPUOP_??? (VCPU operation).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * @vcpuid == VCPU to operate on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * @extra_args == Operation-specific extra arguments (NULL if none).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * Initialise a VCPU. Each VCPU can be initialised only once. A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * newly-initialised VCPU will not run until it is brought up by VCPUOP_up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @extra_arg == pointer to vcpu_guest_context structure containing initial
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * state for the VCPU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define VCPUOP_initialise 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * Bring up a VCPU. This makes the VCPU runnable. This operation will fail
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * if the VCPU has not been initialised (VCPUOP_initialise).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define VCPUOP_up 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * Bring down a VCPU (i.e., make it non-runnable).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * There are a few caveats that callers should observe:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * 1. This operation may return, and VCPU_is_up may return false, before the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * VCPU stops running (i.e., the command is asynchronous). It is a good
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * idea to ensure that the VCPU has entered a non-critical loop before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * bringing it down. Alternatively, this operation is guaranteed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * synchronous if invoked by the VCPU itself.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * 2. After a VCPU is initialised, there is currently no way to drop all its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * references to domain memory. Even a VCPU that is down still holds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * memory references via its pagetable base pointer and GDT. It is good
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * practise to move a VCPU onto an 'idle' or default page table, LDT and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * GDT before bringing it down.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define VCPUOP_down 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* Returns 1 if the given VCPU is up. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define VCPUOP_is_up 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * Return information about the state and running time of a VCPU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * @extra_arg == pointer to vcpu_runstate_info structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define VCPUOP_get_runstate_info 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct vcpu_runstate_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* VCPU's current state (RUNSTATE_*). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* When was current state entered (system time, ns)? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) uint64_t state_entry_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * Update indicator set in state_entry_time:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * When activated via VMASST_TYPE_runstate_update_flag, set during
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * updates in guest memory mapped copy of vcpu_runstate_info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define XEN_RUNSTATE_UPDATE (1ULL << 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Time spent in each RUNSTATE_* (ns). The sum of these times is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * guaranteed not to drift from system time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) uint64_t time[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) DEFINE_GUEST_HANDLE_STRUCT(vcpu_runstate_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* VCPU is currently running on a physical CPU. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define RUNSTATE_running 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* VCPU is runnable, but not currently scheduled on any physical CPU. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define RUNSTATE_runnable 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /* VCPU is blocked (a.k.a. idle). It is therefore not runnable. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define RUNSTATE_blocked 2
^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) * VCPU is not runnable, but it is not blocked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * This is a 'catch all' state for things like hotplug and pauses by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * system administrator (or for critical sections in the hypervisor).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * RUNSTATE_blocked dominates this state (it is the preferred state).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define RUNSTATE_offline 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * Register a shared memory area from which the guest may obtain its own
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * runstate information without needing to execute a hypercall.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * Notes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * 1. The registered address may be virtual or physical, depending on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * platform. The virtual address should be registered on x86 systems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * 2. Only one shared area may be registered per VCPU. The shared area is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * updated by the hypervisor each time the VCPU is scheduled. Thus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * runstate.state will always be RUNSTATE_running and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * runstate.state_entry_time will indicate the system time at which the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * VCPU was last scheduled to run.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * @extra_arg == pointer to vcpu_register_runstate_memory_area structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #define VCPUOP_register_runstate_memory_area 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct vcpu_register_runstate_memory_area {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) GUEST_HANDLE(vcpu_runstate_info) h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct vcpu_runstate_info *v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) uint64_t p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) } addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * Set or stop a VCPU's periodic timer. Every VCPU has one periodic timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * which can be set via these commands. Periods smaller than one millisecond
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * may not be supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define VCPUOP_set_periodic_timer 6 /* arg == vcpu_set_periodic_timer_t */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define VCPUOP_stop_periodic_timer 7 /* arg == NULL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct vcpu_set_periodic_timer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) uint64_t period_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) DEFINE_GUEST_HANDLE_STRUCT(vcpu_set_periodic_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * Set or stop a VCPU's single-shot timer. Every VCPU has one single-shot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * timer which can be set via these commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define VCPUOP_set_singleshot_timer 8 /* arg == vcpu_set_singleshot_timer_t */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define VCPUOP_stop_singleshot_timer 9 /* arg == NULL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct vcpu_set_singleshot_timer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) uint64_t timeout_abs_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) uint32_t flags; /* VCPU_SSHOTTMR_??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) DEFINE_GUEST_HANDLE_STRUCT(vcpu_set_singleshot_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* Flags to VCPUOP_set_singleshot_timer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /* Require the timeout to be in the future (return -ETIME if it's passed). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define _VCPU_SSHOTTMR_future (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #define VCPU_SSHOTTMR_future (1U << _VCPU_SSHOTTMR_future)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * Register a memory location in the guest address space for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * vcpu_info structure. This allows the guest to place the vcpu_info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * structure in a convenient place, such as in a per-cpu data area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * The pointer need not be page aligned, but the structure must not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * cross a page boundary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #define VCPUOP_register_vcpu_info 10 /* arg == struct vcpu_info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct vcpu_register_vcpu_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) uint64_t mfn; /* mfn of page to place vcpu_info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) uint32_t offset; /* offset within page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) uint32_t rsvd; /* unused */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) DEFINE_GUEST_HANDLE_STRUCT(vcpu_register_vcpu_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* Send an NMI to the specified VCPU. @extra_arg == NULL. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) #define VCPUOP_send_nmi 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * Get the physical ID information for a pinned vcpu's underlying physical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * processor. The physical ID informmation is architecture-specific.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * On x86: id[31:0]=apic_id, id[63:32]=acpi_id.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * This command returns -EINVAL if it is not a valid operation for this VCPU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #define VCPUOP_get_physid 12 /* arg == vcpu_get_physid_t */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct vcpu_get_physid {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) uint64_t phys_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) DEFINE_GUEST_HANDLE_STRUCT(vcpu_get_physid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) #define xen_vcpu_physid_to_x86_apicid(physid) ((uint32_t)(physid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) #define xen_vcpu_physid_to_x86_acpiid(physid) ((uint32_t)((physid) >> 32))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * Register a memory location to get a secondary copy of the vcpu time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * parameters. The master copy still exists as part of the vcpu shared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * memory area, and this secondary copy is updated whenever the master copy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * is updated (and using the same versioning scheme for synchronisation).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * The intent is that this copy may be mapped (RO) into userspace so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * that usermode can compute system time using the time info and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * tsc. Usermode will see an array of vcpu_time_info structures, one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * for each vcpu, and choose the right one by an existing mechanism
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * which allows it to get the current vcpu number (such as via a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * segment limit). It can then apply the normal algorithm to compute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * system time from the tsc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * @extra_arg == pointer to vcpu_register_time_info_memory_area structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define VCPUOP_register_vcpu_time_memory_area 13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) DEFINE_GUEST_HANDLE_STRUCT(vcpu_time_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct vcpu_register_time_memory_area {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) GUEST_HANDLE(vcpu_time_info) h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct pvclock_vcpu_time_info *v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) uint64_t p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) } addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) DEFINE_GUEST_HANDLE_STRUCT(vcpu_register_time_memory_area);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #endif /* __XEN_PUBLIC_VCPU_H__ */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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