[PATCH 21/22] KVM: SVM: Report Nested Paging support to userspace

Joerg Roedel
2010-04-27T10:38:31Z

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 | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 266b1d4..6d6b300 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3233,7 +3233,12 @@ static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
entry->ebx = 8; /* Lets support 8 ASIDs in case we add proper
ASID emulation to nested SVM */
entry->ecx = 0; /* Reserved */
- entry->edx = 0; /* Do not support any additional features */
+ entry->edx = 0; /* Per default do not support any
+ additional features */
+
+ /* Support NPT for the guest if enabled */
+ if (npt_enabled)
+ entry->edx = SVM_FEATURE_NPT;

break;
}
--
1.7.0.4