kselftest/arm64: Verify that SSVE signal context has SVE_SIG_FLAG_SM set

Streaming mode SVE signal context should have SVE_SIG_FLAG_SM set but we
were not actually validating this. Add a check.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230117-arm64-test-ssve-za-v1-1-203c00150154@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
index d0a1789..cd73826 100644 (file)
--- a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
+++ b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
@@ -92,6 +92,11 @@ static int do_one_sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc,
                return 1;
        }
 
+       if (!(ssve->flags & SVE_SIG_FLAG_SM)) {
+               fprintf(stderr, "SVE_SIG_FLAG_SM not set in SVE record\n");
+               return 1;
+       }
+
        /* The actual size validation is done in get_current_context() */
        fprintf(stderr, "Got expected size %u and VL %d\n",
                head->size, ssve->vl);