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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-02-07 13:47:39 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 11:53:19 +0300 |
| commit | e3da3acdb32c1804a5c853feebcc037b7434076f (patch) | |
| tree | b0dec2b3e0abfbef09f3688397250048f6a0ebe2 | |
| parent | 33bd6a0b3e8baed6469c8e68ea1b16cb50c4f5af (diff) | |
KVM: SVM: add detection of Nested Paging feature
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>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | 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 5f527dc0e16..c12a75953b5 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) @@ -413,6 +415,12 @@ 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: |