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| author | Andrew Jones <drjones@redhat.com> | 2019-10-31 15:27:28 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-11-01 20:40:59 +0000 |
| commit | 73234775ad61892409ef9cbde9100b3bdee8a70f (patch) | |
| tree | 67b1b028c22a8bc4c3e4f251ab6308113000c558 /target/arm/cpu.c | |
| parent | bd31b751a3c1ac964c78f30424c6eb497d7d29db (diff) | |
| download | qemu-73234775ad61892409ef9cbde9100b3bdee8a70f.zip qemu-73234775ad61892409ef9cbde9100b3bdee8a70f.tar.gz qemu-73234775ad61892409ef9cbde9100b3bdee8a70f.tar.bz2 | |
target/arm: Allow SVE to be disabled via a CPU property
Since 97a28b0eeac14 ("target/arm: Allow VFP and Neon to be disabled via
a CPU property") we can disable the 'max' cpu model's VFP and neon
features, but there's no way to disable SVE. Add the 'sve=on|off'
property to give it that flexibility. We also rename
cpu_max_get/set_sve_vq to cpu_max_get/set_sve_max_vq in order for them
to follow the typical *_get/set_<property-name> pattern.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Beata Michalska <beata.michalska@linaro.org>
Message-id: 20191031142734.8590-4-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/cpu.c')
| -rw-r--r-- | target/arm/cpu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/target/arm/cpu.c b/target/arm/cpu.c index ab3e1a0..72a27ec 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -200,7 +200,8 @@ static void arm_cpu_reset(CPUState *s) env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 16, 2, 3); env->cp15.cptr_el[3] |= CPTR_EZ; /* with maximum vector length */ - env->vfp.zcr_el[1] = cpu->sve_max_vq - 1; + env->vfp.zcr_el[1] = cpu_isar_feature(aa64_sve, cpu) ? + cpu->sve_max_vq - 1 : 0; env->vfp.zcr_el[2] = env->vfp.zcr_el[1]; env->vfp.zcr_el[3] = env->vfp.zcr_el[1]; /* |