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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getcpu.S (353B)

      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_getcpu(unsigned *cpu, unsigned *node, void *unused); */
     11ENTRY(__vdso_getcpu)
     12	.cfi_startproc
     13	/* For now, just do the syscall. */
     14	li a7, __NR_getcpu
     15	ecall
     16	ret
     17	.cfi_endproc
     18ENDPROC(__vdso_getcpu)