cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

SB+poonceonces.litmus (423B)

      1C SB+poonceonces
      2
      3(*
      4 * Result: Sometimes
      5 *
      6 * This litmus test demonstrates that at least some ordering is required
      7 * to order the store-buffering pattern, where each process writes to the
      8 * variable that the preceding process reads.
      9 *)
     10
     11{}
     12
     13P0(int *x, int *y)
     14{
     15	int r0;
     16
     17	WRITE_ONCE(*x, 1);
     18	r0 = READ_ONCE(*y);
     19}
     20
     21P1(int *x, int *y)
     22{
     23	int r0;
     24
     25	WRITE_ONCE(*y, 1);
     26	r0 = READ_ONCE(*x);
     27}
     28
     29exists (0:r0=0 /\ 1:r0=0)