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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2018-10-16 18:50:01 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-17 00:30:14 +0200 |
| commit | 57b119da3594f5145a64fdebe0ac9ee0cc65f371 (patch) | |
| tree | eda660f821fba5b44f0c18057ab98646ac6b3fa0 /arch/x86/include/asm/kvm_host.h | |
| parent | 5d7a6443368e48ca041fea086e345420c027a8cd (diff) | |
| download | lwn-57b119da3594f5145a64fdebe0ac9ee0cc65f371.tar.gz lwn-57b119da3594f5145a64fdebe0ac9ee0cc65f371.zip | |
KVM: nVMX: add KVM_CAP_HYPERV_ENLIGHTENED_VMCS capability
Enlightened VMCS is opt-in. The current version does not contain all
fields supported by nested VMX so we must not advertise the
corresponding VMX features if enlightened VMCS is enabled.
Userspace is given the enlightened VMCS version supported by KVM as
part of enabling KVM_CAP_HYPERV_ENLIGHTENED_VMCS. The version is to
be advertised to the nested hypervisor, currently done via a cpuid
leaf for Hyper-V.
Suggested-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 4b09d4aa9bf4..258fc2c85301 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1179,6 +1179,9 @@ struct kvm_x86_ops { int (*mem_enc_unreg_region)(struct kvm *kvm, struct kvm_enc_region *argp); int (*get_msr_feature)(struct kvm_msr_entry *entry); + + int (*nested_enable_evmcs)(struct kvm_vcpu *vcpu, + uint16_t *vmcs_version); }; struct kvm_arch_async_pf { |