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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test_subskeleton.c (589B)

      1// SPDX-License-Identifier: GPL-2.0
      2/* Copyright (c) Meta Platforms, Inc. and affiliates. */
      3
      4#include <stdbool.h>
      5#include <linux/bpf.h>
      6#include <bpf/bpf_helpers.h>
      7
      8/* volatile to force a read, compiler may assume 0 otherwise */
      9const volatile int rovar1;
     10int out1;
     11
     12/* Override weak symbol in test_subskeleton_lib */
     13int var5 = 5;
     14
     15extern volatile bool CONFIG_BPF_SYSCALL __kconfig;
     16
     17extern int lib_routine(void);
     18
     19SEC("raw_tp/sys_enter")
     20int handler1(const void *ctx)
     21{
     22	(void) CONFIG_BPF_SYSCALL;
     23
     24	out1 = lib_routine() * rovar1;
     25	return 0;
     26}
     27
     28char LICENSE[] SEC("license") = "GPL";