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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ISA2+pooncelock+pooncelock+pombonce.litmus (588B)

      1C ISA2+pooncelock+pooncelock+pombonce
      2
      3(*
      4 * Result: Never
      5 *
      6 * This test shows that write-write ordering provided by locks
      7 * (in P0() and P1()) is visible to external process P2().
      8 *)
      9
     10{}
     11
     12P0(int *x, int *y, spinlock_t *mylock)
     13{
     14	spin_lock(mylock);
     15	WRITE_ONCE(*x, 1);
     16	WRITE_ONCE(*y, 1);
     17	spin_unlock(mylock);
     18}
     19
     20P1(int *y, int *z, spinlock_t *mylock)
     21{
     22	int r0;
     23
     24	spin_lock(mylock);
     25	r0 = READ_ONCE(*y);
     26	WRITE_ONCE(*z, 1);
     27	spin_unlock(mylock);
     28}
     29
     30P2(int *x, int *z)
     31{
     32	int r1;
     33	int r2;
     34
     35	r2 = READ_ONCE(*z);
     36	smp_mb();
     37	r1 = READ_ONCE(*x);
     38}
     39
     40exists (1:r0=1 /\ 2:r2=1 /\ 2:r1=0)