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Subject[PATCH 17/18] KVM: SVM: Report Nested Paging support to userspace
Date
This patch implements the reporting of the nested paging
feature support to userspace.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kvm/svm.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index fe1398e..ce71023 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3289,6 +3289,16 @@ static void svm_cpuid_update(struct kvm_vcpu *vcpu)

static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
{
+ switch (func) {
+ case 0x8000000A:
+ if (!npt_enabled)
+ break;
+
+ /* NPT feature is supported by Nested SVM */
+ entry->edx = SVM_FEATURE_NPT;
+
+ break;
+ }
}

static const struct trace_print_flags svm_exit_reasons_str[] = {
--
1.7.0



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