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_lookup_and_delete.c (547B)

      1// SPDX-License-Identifier: GPL-2.0
      2
      3#include "vmlinux.h"
      4#include <bpf/bpf_helpers.h>
      5
      6__u32 set_pid = 0;
      7__u64 set_key = 0;
      8__u64 set_value = 0;
      9
     10struct {
     11	__uint(type, BPF_MAP_TYPE_HASH);
     12	__uint(max_entries, 2);
     13	__type(key, __u64);
     14	__type(value, __u64);
     15} hash_map SEC(".maps");
     16
     17SEC("tp/syscalls/sys_enter_getpgid")
     18int bpf_lookup_and_delete_test(const void *ctx)
     19{
     20	if (set_pid == bpf_get_current_pid_tgid() >> 32)
     21		bpf_map_update_elem(&hash_map, &set_key, &set_value, BPF_NOEXIST);
     22
     23	return 0;
     24}
     25
     26char _license[] SEC("license") = "GPL";