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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R+poonceonces.litmus (388B)

      1C R+poonceonces
      2
      3(*
      4 * Result: Sometimes
      5 *
      6 * This is the unordered (thus lacking smp_mb()) version of one of the
      7 * classic counterintuitive litmus tests that illustrates the effects of
      8 * store propagation delays.
      9 *)
     10
     11{}
     12
     13P0(int *x, int *y)
     14{
     15	WRITE_ONCE(*x, 1);
     16	WRITE_ONCE(*y, 1);
     17}
     18
     19P1(int *x, int *y)
     20{
     21	int r0;
     22
     23	WRITE_ONCE(*y, 2);
     24	r0 = READ_ONCE(*x);
     25}
     26
     27exists (y=2 /\ 1:r0=0)