KVM: SVM: Report Nested Paging support to userspace

This patch implements the reporting of the nested paging
feature support to userspace.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index de1930e..36e6c88 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3481,6 +3481,10 @@ static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
                if (svm_has(SVM_FEATURE_NRIP))
                        entry->edx |= SVM_FEATURE_NRIP;
 
+               /* Support NPT for the guest if enabled */
+               if (npt_enabled)
+                       entry->edx |= SVM_FEATURE_NPT;
+
                break;
        }
 }