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Commit d2ebb410 authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity
Browse files

KVM: SVM: add tracing support for TDP page faults 



To distinguish between real page faults and nested page faults they should be
traced as different events. This is implemented by this patch.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent af9ca2d7

arch/x86/kvm/svm.c

+4 −0
Original line number Diff line number Diff line
@@ -1011,6 +1011,10 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) 
		KVMTRACE_3D(PAGE_FAULT, &svm->vcpu, error_code,

			    (u32)fault_address, (u32)(fault_address >> 32),

			    handler);

	else

		KVMTRACE_3D(TDP_FAULT, &svm->vcpu, error_code,

			    (u32)fault_address, (u32)(fault_address >> 32),

			    handler);



	return kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code);

}

include/asm-x86/kvm.h

+1 −0
Original line number Diff line number Diff line
@@ -228,5 +228,6 @@ struct kvm_pit_state { 
#define KVM_TRC_CLTS             (KVM_TRC_HANDLER + 0x12)

#define KVM_TRC_LMSW             (KVM_TRC_HANDLER + 0x13)

#define KVM_TRC_APIC_ACCESS      (KVM_TRC_HANDLER + 0x14)

#define KVM_TRC_TDP_FAULT        (KVM_TRC_HANDLER + 0x15)



#endif