[Stable-8.2.2 45/60] target/arm: Fix SVE/SME gross MTE suppression checks

[Michael Tokarev]

From: Richard Henderson <richard.henderson@linaro.org>

The TBI and TCMA bits are located within mtedesc, not desc.

Cc: qemu-stable@nongnu.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-id: 20240207025210.8837-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 855f94eca80c85a99f459e36684ea2f98f6a3243)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/target/arm/tcg/sme_helper.c b/target/arm/tcg/sme_helper.c
index 1ee2690ceb..904bfdac43 100644
--- a/target/arm/tcg/sme_helper.c
+++ b/target/arm/tcg/sme_helper.c
@@ -573,8 +573,8 @@ void sme_ld1_mte(CPUARMState *env, void *za, uint64_t *vg,
     desc = extract32(desc, 0, SIMD_DATA_SHIFT + SVE_MTEDESC_SHIFT);
 
     /* Perform gross MTE suppression early. */
-    if (!tbi_check(desc, bit55) ||
-        tcma_check(desc, bit55, allocation_tag_from_addr(addr))) {
+    if (!tbi_check(mtedesc, bit55) ||
+        tcma_check(mtedesc, bit55, allocation_tag_from_addr(addr))) {
         mtedesc = 0;
     }
 
@@ -750,8 +750,8 @@ void sme_st1_mte(CPUARMState *env, void *za, uint64_t *vg, 
target_ulong addr,
     desc = extract32(desc, 0, SIMD_DATA_SHIFT + SVE_MTEDESC_SHIFT);
 
     /* Perform gross MTE suppression early. */
-    if (!tbi_check(desc, bit55) ||
-        tcma_check(desc, bit55, allocation_tag_from_addr(addr))) {
+    if (!tbi_check(mtedesc, bit55) ||
+        tcma_check(mtedesc, bit55, allocation_tag_from_addr(addr))) {
         mtedesc = 0;
     }
 
diff --git a/target/arm/tcg/sve_helper.c b/target/arm/tcg/sve_helper.c
index f006d152cc..5699dfe667 100644
--- a/target/arm/tcg/sve_helper.c
+++ b/target/arm/tcg/sve_helper.c
@@ -5800,8 +5800,8 @@ void sve_ldN_r_mte(CPUARMState *env, uint64_t *vg, 
target_ulong addr,
     desc = extract32(desc, 0, SIMD_DATA_SHIFT + SVE_MTEDESC_SHIFT);
 
     /* Perform gross MTE suppression early. */
-    if (!tbi_check(desc, bit55) ||
-        tcma_check(desc, bit55, allocation_tag_from_addr(addr))) {
+    if (!tbi_check(mtedesc, bit55) ||
+        tcma_check(mtedesc, bit55, allocation_tag_from_addr(addr))) {
         mtedesc = 0;
     }
 
@@ -6156,8 +6156,8 @@ void sve_ldnfff1_r_mte(CPUARMState *env, void *vg, 
target_ulong addr,
     desc = extract32(desc, 0, SIMD_DATA_SHIFT + SVE_MTEDESC_SHIFT);
 
     /* Perform gross MTE suppression early. */
-    if (!tbi_check(desc, bit55) ||
-        tcma_check(desc, bit55, allocation_tag_from_addr(addr))) {
+    if (!tbi_check(mtedesc, bit55) ||
+        tcma_check(mtedesc, bit55, allocation_tag_from_addr(addr))) {
         mtedesc = 0;
     }
 
@@ -6410,8 +6410,8 @@ void sve_stN_r_mte(CPUARMState *env, uint64_t *vg, 
target_ulong addr,
     desc = extract32(desc, 0, SIMD_DATA_SHIFT + SVE_MTEDESC_SHIFT);
 
     /* Perform gross MTE suppression early. */
-    if (!tbi_check(desc, bit55) ||
-        tcma_check(desc, bit55, allocation_tag_from_addr(addr))) {
+    if (!tbi_check(mtedesc, bit55) ||
+        tcma_check(mtedesc, bit55, allocation_tag_from_addr(addr))) {
         mtedesc = 0;
     }
 
-- 
2.39.2