diff mbox series

[Stable-7.2.12,23/29] target/arm: Disable SVE extensions when SVE is disabled

Message ID 20240607191219.528194-4-mjt@tls.msk.ru
State New
Headers show
Series None | expand

Commit Message

Michael Tokarev June 7, 2024, 7:12 p.m. UTC 
From: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2304
Reported-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Message-id: 20240526204551.553282-1-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit daf9748ac002ec35258e5986b6257961fd04b565)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff mbox series

Patch

diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 3d74f134f5..037e9d9feb 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -190,7 +190,11 @@  void arm_cpu_sve_finalize(ARMCPU *cpu, Error **errp)
          * No explicit bits enabled, and no implicit bits from sve-max-vq.
          */
         if (!cpu_isar_feature(aa64_sve, cpu)) {
-            /* SVE is disabled and so are all vector lengths.  Good. */
+            /*
+             * SVE is disabled and so are all vector lengths.  Good.
+             * Disable all SVE extensions as well.
+             */
+            cpu->isar.id_aa64zfr0 = 0;
             return;
         }