KVM: export information about NPT to generic x86 code

The generic x86 code has to know if the specific implementation uses Nested
Paging. In the generic code Nested Paging is called Two Dimensional Paging
(TDP) to avoid confusion with (future) TDP implementations of other vendors.
This patch exports the availability of TDP to the generic x86 code.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index fb5d6c2e6a08..9e29a13136c4 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -426,8 +426,10 @@ static __init int svm_hardware_setup(void)
                 npt_enabled = false;
         }
 
-        if (npt_enabled)
+        if (npt_enabled) {
                 printk(KERN_INFO "kvm: Nested Paging enabled\n");
+                kvm_enable_tdp();
+        }
 
         return 0;