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 (538B)

      1// SPDX-License-Identifier: GPL-2.0
      2
      3#include <linux/linkage.h>
      4#include <linux/error-injection.h>
      5#include <linux/kprobes.h>
      6#include <linux/objtool.h>
      7
      8asmlinkage void just_return_func(void);
      9
     10asm(
     11	".text\n"
     12	".type just_return_func, @function\n"
     13	".globl just_return_func\n"
     14	"just_return_func:\n"
     15		ANNOTATE_NOENDBR
     16		ASM_RET
     17	".size just_return_func, .-just_return_func\n"
     18);
     19
     20void override_function_with_return(struct pt_regs *regs)
     21{
     22	regs->ip = (unsigned long)&just_return_func;
     23}
     24NOKPROBE_SYMBOL(override_function_with_return);