diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2023-12-04 13:46:13 -0500 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2023-12-04 13:46:14 -0500 |
| commit | db5e49e76c64d513f9162ec91a6f91217af2b1d9 (patch) | |
| tree | 1cfb02986beedde9d0c27407dbe51e98910da25e /target | |
| parent | 169c4e77640b6ab6d7665ed0839873c1bc8d766d (diff) | |
| parent | f7767ca301796334f74b9b642b395a4bd3e3dbac (diff) | |
Merge tag 'pull-target-arm-20231204-1' of https://git.linaro.org/people/pmaydell/qemu-arm into staging
target-arm queue:
* Turn off SME if SVE is turned off (this combination doesn't
currently work and QEMU will assert if you try it)
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# gpg: Signature made Mon 04 Dec 2023 09:15:32 EST
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [full]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [full]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [full]
# gpg: aka "Peter Maydell <peter@archaic.org.uk>" [unknown]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* tag 'pull-target-arm-20231204-1' of https://git.linaro.org/people/pmaydell/qemu-arm:
target/arm: Disable SME if SVE is disabled
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/cpu.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 25e9d2ae7b..efb22a87f9 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -1743,6 +1743,16 @@ void arm_cpu_finalize_features(ARMCPU *cpu, Error **errp) return; } + /* + * FEAT_SME is not architecturally dependent on FEAT_SVE (unless + * FEAT_SME_FA64 is present). However our implementation currently + * assumes it, so if the user asked for sve=off then turn off SME also. + * (KVM doesn't currently support SME at all.) + */ + if (cpu_isar_feature(aa64_sme, cpu) && !cpu_isar_feature(aa64_sve, cpu)) { + object_property_set_bool(OBJECT(cpu), "sme", false, &error_abort); + } + arm_cpu_sme_finalize(cpu, &local_err); if (local_err != NULL) { error_propagate(errp, local_err); |