| Message ID | 20190429152803.7719-11-mathieu.desnoyers@efficios.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | None | expand |
diff --git a/tools/testing/selftests/rseq/rseq-ppc.h b/tools/testing/selftests/rseq/rseq-ppc.h index 9df18487fa9f..76be90196fe4 100644 --- a/tools/testing/selftests/rseq/rseq-ppc.h +++ b/tools/testing/selftests/rseq/rseq-ppc.h @@ -6,7 +6,15 @@ * (C) Copyright 2016-2018 - Boqun Feng <boqun.feng@gmail.com> */ -#define RSEQ_SIG 0x53053053 +/* + * RSEQ_SIG is used with the following trap instruction: + * + * powerpc-be: 0f e5 00 0b twui r5,11 + * powerpc64-le: 0b 00 e5 0f twui r5,11 + * powerpc64-be: 0f e5 00 0b twui r5,11 + */ + +#define RSEQ_SIG 0x0fe5000b #define rseq_smp_mb() __asm__ __volatile__ ("sync" ::: "memory", "cc") #define rseq_smp_lwsync() __asm__ __volatile__ ("lwsync" ::: "memory", "cc")
Use "twui" as the guard instruction for the restartable sequence abort handler. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <paulus@samba.org> CC: Michael Ellerman <mpe@ellerman.id.au> CC: Boqun Feng <boqun.feng@gmail.com> CC: Peter Zijlstra <peterz@infradead.org> CC: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> CC: Alan Modra <amodra@gmail.com> CC: linuxppc-dev@lists.ozlabs.org --- tools/testing/selftests/rseq/rseq-ppc.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)