From 70367f091777419f42e5f68f4206deb641335877 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Thu, 2 Sep 2021 11:35:26 +0200 Subject: 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 Message-Id: <20210902093530.345756-5-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- target/i386/cpu.h | 1 + 1 file changed, 1 insertion(+) (limited to 'target/i386/cpu.h') diff --git a/target/i386/cpu.h b/target/i386/cpu.h index c990150..8a7209b 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1719,6 +1719,7 @@ struct X86CPU { uint32_t hyperv_version_id[4]; uint32_t hyperv_limits[3]; uint32_t hyperv_nested[4]; + bool hyperv_enforce_cpuid; bool check_cpuid; bool enforce_cpuid; -- cgit v1.1