From: Peter Maydell <peter.mayd...@linaro.org>
When determining the current vector length, the SMCR_EL2.LEN and
SVCR_EL2.LEN settings should only be considered if EL2 is enabled
(compare the pseudocode CurrentSVL and CurrentNSVL which call
EL2Enabled()).
We were checking against ARM_FEATURE_EL2 rather than calling
arm_is_el2_enabled(), which meant that we would look at
SMCR_EL2/SVCR_EL2 when in Secure EL1 or Secure EL0 even if Secure EL2
was not enabled.
Use the correct check in sve_vqm1_for_el_sm().
Cc: qemu-sta...@nongnu.org
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Message-id: 20240722172957.1041231-5-peter.mayd...@linaro.org
(cherry picked from commit f573ac059ed060234fcef4299fae9e500d357c33)
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
diff --git a/target/arm/helper.c b/target/arm/helper.c
index ca2c6e9732..9ff266a235 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -6860,7 +6860,7 @@ uint32_t sve_vqm1_for_el_sm(CPUARMState *env, int el,
bool sm)
if (el <= 1 && !el_is_in_host(env, el)) {
len = MIN(len, 0xf & (uint32_t)cr[1]);
}
- if (el <= 2 && arm_feature(env, ARM_FEATURE_EL2)) {
+ if (el <= 2 && arm_is_el2_enabled(env)) {
len = MIN(len, 0xf & (uint32_t)cr[2]);
}
if (arm_feature(env, ARM_FEATURE_EL3)) {
--
2.39.2
