[PATCH v2 1/3] target/arm: Fix SME vs AdvSIMD exception priority

[Richard Henderson]

We failed to raise an exception when
sme_excp_el == 0 and fp_excp_el == 1.

Cc: qemu-sta...@nongnu.org
Fixes: 3d74825f4d6 ("target/arm: Add SME enablement checks")
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
 target/arm/tcg/translate-a64.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index ac80f572a2..bb49a2ce90 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -1494,7 +1494,8 @@ bool sme_enabled_check(DisasContext *s)
      * to be zero when fp_excp_el has priority.  This is because we need
      * sme_excp_el by itself for cpregs access checks.
      */
-    if (!s->fp_excp_el || s->sme_excp_el < s->fp_excp_el) {
+    if (s->sme_excp_el
+        && (!s->fp_excp_el || s->sme_excp_el <= s->fp_excp_el)) {
         bool ret = sme_access_check(s);
         s->fp_access_checked = (ret ? 1 : -1);
         return ret;
-- 
2.43.0