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Commit e3da3acd authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity
Browse files

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: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 33bd6a0b

arch/x86/kvm/svm.c

+8 −0
Original line number Original line Diff line number Diff line
@@ -47,6 +47,8 @@ MODULE_LICENSE("GPL"); 
#define SVM_FEATURE_LBRV (1 << 1)

#define SVM_FEATURE_LBRV (1 << 1)

#define SVM_DEATURE_SVML (1 << 2)

#define SVM_DEATURE_SVML (1 << 2)





static bool npt_enabled = false;



static void kvm_reput_irq(struct vcpu_svm *svm);

static void kvm_reput_irq(struct vcpu_svm *svm);





static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)

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);

	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;

	return 0;





err_2:

err_2: