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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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