Messages in this thread Patch in this message | | | From | "Joerg Roedel" <> | Subject | [PATCH 2/8] SVM: add detection of Nested Paging feature | Date | Fri, 25 Jan 2008 21:53:07 +0100 |
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Let SVM detect if the Nested Paging feature is available on the hardware. Disable it to keep this patch series bisectable.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/kvm/svm.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 0c58527..49bb57a 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -47,6 +47,8 @@ MODULE_LICENSE("GPL"); #define SVM_FEATURE_LBRV (1 << 1) #define SVM_DEATURE_SVML (1 << 2) +static bool npt_enabled = false; + static void kvm_reput_irq(struct vcpu_svm *svm); static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu) @@ -410,6 +412,12 @@ static __init int svm_hardware_setup(void) svm_features = cpuid_edx(SVM_CPUID_FUNC); + if (!svm_has(SVM_FEATURE_NPT)) + npt_enabled = false; + + if (npt_enabled) + printk(KERN_INFO "kvm: Nested Paging enabled\n"); + return 0; err_2: -- 1.5.3.7
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