^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1995, 1996, 1997, 2000, 2001, 05 by Ralf Baechle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2001 MIPS Technologies, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/utsname.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/msg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/shm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/ipc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/sched/task_stack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/asm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <asm/asm-eva.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <asm/branch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <asm/cachectl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/cacheflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <asm/asm-offsets.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <asm/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <asm/sim.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <asm/shmparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <asm/sync.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <asm/sysmips.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <asm/switch_to.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * For historic reasons the pipe(2) syscall on MIPS has an unusual calling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * convention. It returns results in registers $v0 / $v1 which means there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * is no need for it to do verify the validity of a userspace pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * argument. Historically that used to be expensive in Linux. These days
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * the performance advantage is negligible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) asmlinkage int sysm_pipe(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int fd[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int error = do_pipe_flags(fd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) current_pt_regs()->regs[3] = fd[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return fd[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) SYSCALL_DEFINE6(mips_mmap, unsigned long, addr, unsigned long, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) unsigned long, prot, unsigned long, flags, unsigned long,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) fd, off_t, offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (offset & ~PAGE_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return ksys_mmap_pgoff(addr, len, prot, flags, fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) offset >> PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) SYSCALL_DEFINE6(mips_mmap2, unsigned long, addr, unsigned long, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) unsigned long, prot, unsigned long, flags, unsigned long, fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) unsigned long, pgoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (pgoff & (~PAGE_MASK >> 12))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return ksys_mmap_pgoff(addr, len, prot, flags, fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) pgoff >> (PAGE_SHIFT - 12));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) save_static_function(sys_fork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) save_static_function(sys_clone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) save_static_function(sys_clone3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) SYSCALL_DEFINE1(set_thread_area, unsigned long, addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct thread_info *ti = task_thread_info(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) ti->tp_value = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (cpu_has_userlocal)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) write_c0_userlocal(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static inline int mips_atomic_set(unsigned long addr, unsigned long new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) unsigned long old, tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct pt_regs *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) unsigned int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (unlikely(addr & 3))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (unlikely(!access_ok((const void __user *)addr, 4)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (cpu_has_llsc && IS_ENABLED(CONFIG_WAR_R10000_LLSC)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) " .set push \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) " .set arch=r4000 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) " li %[err], 0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) "1: ll %[old], (%[addr]) \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) " move %[tmp], %[new] \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) "2: sc %[tmp], (%[addr]) \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) " beqzl %[tmp], 1b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) "3: \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) " .insn \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) " .section .fixup,\"ax\" \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) "4: li %[err], %[efault] \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) " j 3b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) " .previous \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) " .section __ex_table,\"a\" \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) " "STR(PTR)" 1b, 4b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) " "STR(PTR)" 2b, 4b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) " .previous \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) " .set pop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) : [old] "=&r" (old),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) [err] "=&r" (err),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) [tmp] "=&r" (tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) : [addr] "r" (addr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) [new] "r" (new),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) [efault] "i" (-EFAULT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) } else if (cpu_has_llsc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) " .set push \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) " .set "MIPS_ISA_ARCH_LEVEL" \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) " li %[err], 0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) "1: \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) " " __SYNC(full, loongson3_war) " \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) user_ll("%[old]", "(%[addr])")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) " move %[tmp], %[new] \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) "2: \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) user_sc("%[tmp]", "(%[addr])")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) " beqz %[tmp], 1b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) "3: \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) " .insn \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) " .section .fixup,\"ax\" \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) "5: li %[err], %[efault] \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) " j 3b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) " .previous \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) " .section __ex_table,\"a\" \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) " "STR(PTR)" 1b, 5b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) " "STR(PTR)" 2b, 5b \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) " .previous \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) " .set pop \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) : [old] "=&r" (old),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) [err] "=&r" (err),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) [tmp] "=&r" (tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) : [addr] "r" (addr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) [new] "r" (new),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) [efault] "i" (-EFAULT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) preempt_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ll_bit = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) ll_task = current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) preempt_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) err = __get_user(old, (unsigned int *) addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) err |= __put_user(new, (unsigned int *) addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) rmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) } while (!ll_bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) regs = current_pt_regs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) regs->regs[2] = old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) regs->regs[7] = 0; /* No error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * Don't let your children do this ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) __asm__ __volatile__(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) " move $29, %0 \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) " j syscall_exit \n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) : /* no outputs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) : "r" (regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) /* unreached. Honestly. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) unreachable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * mips_atomic_set() normally returns directly via syscall_exit potentially
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * clobbering static registers, so be sure to preserve them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) save_static_function(sys_sysmips);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) SYSCALL_DEFINE3(sysmips, long, cmd, long, arg1, long, arg2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) case MIPS_ATOMIC_SET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return mips_atomic_set(arg1, arg2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) case MIPS_FIXADE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (arg1 & ~3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (arg1 & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) set_thread_flag(TIF_FIXADE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) clear_thread_flag(TIF_FIXADE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (arg1 & 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) set_thread_flag(TIF_LOGADE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) clear_thread_flag(TIF_LOGADE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) case FLUSH_CACHE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) __flush_cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * No implemented yet ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) SYSCALL_DEFINE3(cachectl, char *, addr, int, nbytes, int, op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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