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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error-inject.c (365B)

      1// SPDX-License-Identifier: GPL-2.0+
      2#include <asm/ptrace.h>
      3#include <linux/error-injection.h>
      4#include <linux/kprobes.h>
      5
      6void override_function_with_return(struct pt_regs *regs)
      7{
      8	/*
      9	 * Emulate 'br 14'. 'regs' is captured by kprobes on entry to some
     10	 * kernel function.
     11	 */
     12	regs->psw.addr = regs->gprs[14];
     13}
     14NOKPROBE_SYMBOL(override_function_with_return);