cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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flush_icache.S (396B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (C) 2017 SiFive
      4 */
      5
      6#include <linux/linkage.h>
      7#include <asm/unistd.h>
      8
      9	.text
     10/* int __vdso_flush_icache(void *start, void *end, unsigned long flags); */
     11ENTRY(__vdso_flush_icache)
     12	.cfi_startproc
     13#ifdef CONFIG_SMP
     14	li a7, __NR_riscv_flush_icache
     15	ecall
     16#else
     17	fence.i
     18	li a0, 0
     19#endif
     20	ret
     21	.cfi_endproc
     22ENDPROC(__vdso_flush_icache)