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-rw-r--r--tools/testing/selftests/arm64/signal/testcases/za_regs.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/tools/testing/selftests/arm64/signal/testcases/za_regs.c b/tools/testing/selftests/arm64/signal/testcases/za_regs.c
index b94e4f99fcac..2514cb7de525 100644
--- a/tools/testing/selftests/arm64/signal/testcases/za_regs.c
+++ b/tools/testing/selftests/arm64/signal/testcases/za_regs.c
@@ -52,6 +52,8 @@ static void setup_za_regs(void)
asm volatile(".inst 0xd503457f" : : : );
}
+static char zeros[ZA_SIG_REGS_SIZE(SVE_VQ_MAX)];
+
static int do_one_sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc,
unsigned int vl)
{
@@ -87,10 +89,22 @@ static int do_one_sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc,
return 1;
}
- /* The actual size validation is done in get_current_context() */
+ if (head->size != ZA_SIG_CONTEXT_SIZE(sve_vq_from_vl(vl))) {
+ fprintf(stderr, "ZA context size %u, expected %lu\n",
+ head->size, ZA_SIG_CONTEXT_SIZE(sve_vq_from_vl(vl)));
+ return 1;
+ }
+
fprintf(stderr, "Got expected size %u and VL %d\n",
head->size, za->vl);
+ /* We didn't load any data into ZA so it should be all zeros */
+ if (memcmp(zeros, (char *)za + ZA_SIG_REGS_OFFSET,
+ ZA_SIG_REGS_SIZE(sve_vq_from_vl(za->vl))) != 0) {
+ fprintf(stderr, "ZA data invalid\n");
+ return 1;
+ }
+
return 0;
}