diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-09-02 11:35:25 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-01 19:04:45 +0200 |
| commit | 988f7b8bfeffbf521814d1e48c321f7674277512 (patch) | |
| tree | be12f2856161ae4b1463121f849245a5f8ceff57 /target/i386/cpu.c | |
| parent | 8bdfec393a2ac67df9cecc0983d130db4a6bba58 (diff) | |
i386: Support KVM_CAP_ENFORCE_PV_FEATURE_CPUID
By default, KVM allows the guest to use all currently supported PV features
even when they were not announced in guest visible CPUIDs. Introduce a new
"kvm-pv-enforce-cpuid" flag to limit the supported feature set to the
exposed features. The feature is supported by Linux >= 5.10 and is not
enabled by default in QEMU.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210902093530.345756-4-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/cpu.c')
| -rw-r--r-- | target/i386/cpu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index cacec605bf..598019de12 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6860,6 +6860,8 @@ static Property x86_cpu_properties[] = { DEFINE_PROP_BOOL("l3-cache", X86CPU, enable_l3_cache, true), DEFINE_PROP_BOOL("kvm-no-smi-migration", X86CPU, kvm_no_smi_migration, false), + DEFINE_PROP_BOOL("kvm-pv-enforce-cpuid", X86CPU, kvm_pv_enforce_cpuid, + false), DEFINE_PROP_BOOL("vmware-cpuid-freq", X86CPU, vmware_cpuid_freq, true), DEFINE_PROP_BOOL("tcg-cpuid", X86CPU, expose_tcg, true), DEFINE_PROP_BOOL("x-migrate-smi-count", X86CPU, migrate_smi_count, |