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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-09-02 11:35:26 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-01 19:04:45 +0200 |
| commit | 70367f091777419f42e5f68f4206deb641335877 (patch) | |
| tree | 99fc953aad6b0a2f8d998d3f640bcb873ab86f65 /target/i386/cpu.c | |
| parent | 988f7b8bfeffbf521814d1e48c321f7674277512 (diff) | |
| download | qemu-70367f091777419f42e5f68f4206deb641335877.zip qemu-70367f091777419f42e5f68f4206deb641335877.tar.gz qemu-70367f091777419f42e5f68f4206deb641335877.tar.bz2 | |
i386: Support KVM_CAP_HYPERV_ENFORCE_CPUID
By default, KVM allows the guest to use all currently supported Hyper-V
enlightenments when Hyper-V CPUID interface was exposed, regardless of if
some features were not announced in guest visible CPUIDs. hv-enforce-cpuid
feature alters this behavior and only allows the guest to use exposed
Hyper-V enlightenments. The feature is supported by Linux >= 5.14 and is
not enabled by default in QEMU.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210902093530.345756-5-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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 598019d..2a19eba 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6834,6 +6834,7 @@ static Property x86_cpu_properties[] = { DEFINE_PROP_ON_OFF_AUTO("hv-no-nonarch-coresharing", X86CPU, hyperv_no_nonarch_cs, ON_OFF_AUTO_OFF), DEFINE_PROP_BOOL("hv-passthrough", X86CPU, hyperv_passthrough, false), + DEFINE_PROP_BOOL("hv-enforce-cpuid", X86CPU, hyperv_enforce_cpuid, false), DEFINE_PROP_BOOL("check", X86CPU, check_cpuid, true), DEFINE_PROP_BOOL("enforce", X86CPU, enforce_cpuid, false), |