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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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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>
This commit is contained in:
Stefan Hajnoczi 2023-12-04 13:46:13 -05:00
parent 169c4e7764 f7767ca301
commit db5e49e76c
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
target/arm/cpu.c
View File

@ -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);