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target/arm: Make KVM -cpu max exactly like -cpu host 

Currently for KVM the intention is that '-cpu max' and '-cpu host'
are the same thing, but because we did this with two separate
pieces of code they have got a little bit out of sync. Specifically,
'max' has a 'sve-max-vq' property, and 'host' does not.

Bring the two together by having the initfn for 'max' actually
call the initfn for 'host'. This will result in 'max' no longer
exposing the 'sve-max-vq' property when using KVM.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Alexander Graf <agraf@csgraf.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220204165506.2846058-4-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-02-04 16:55:03 +00:00
parent 73cc9ee6bf
commit 0baa21be49
1 changed files with 8 additions and 6 deletions
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14
target/arm/cpu64.c
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@ -682,22 +682,22 @@ void aarch64_add_pauth_properties(Object *obj)
}
}
#if defined(CONFIG_KVM) || defined(CONFIG_HVF)
static void aarch64_host_initfn(Object *obj)
{
#if defined(CONFIG_KVM)
ARMCPU *cpu = ARM_CPU(obj);
#ifdef CONFIG_KVM
kvm_arm_set_cpu_features_from_host(cpu);
if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
aarch64_add_sve_properties(obj);
aarch64_add_pauth_properties(obj);
}
#else
#elif defined(CONFIG_HVF)
ARMCPU *cpu = ARM_CPU(obj);
hvf_arm_set_cpu_features_from_host(cpu);
#else
g_assert_not_reached();
#endif
}
#endif
/* -cpu max: if KVM is enabled, like -cpu host (best possible with this host);
* otherwise, a CPU with as many features enabled as our emulation supports.
@ -709,7 +709,9 @@ static void aarch64_max_initfn(Object *obj)
ARMCPU *cpu = ARM_CPU(obj);
if (kvm_enabled()) {
kvm_arm_set_cpu_features_from_host(cpu);
/* With KVM, '-cpu max' is identical to '-cpu host' */
aarch64_host_initfn(obj);
return;
} else {
uint64_t t;
uint32_t u;