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Commit ec9e60b2 authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity
Browse files

KVM: X86: Introduce generic guest-mode representation 



This patch introduces a generic representation of guest-mode
fpr a vcpu. This currently only exists in the SVM code.
Having this representation generic will help making the
non-svm code aware of nesting when this is necessary.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 6389ee94

arch/x86/include/asm/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -779,6 +779,7 @@ enum { 
#define HF_VINTR_MASK		(1 << 2)

#define HF_NMI_MASK		(1 << 3)

#define HF_IRET_MASK		(1 << 4)

#define HF_GUEST_MASK		(1 << 5) /* VCPU is in guest-mode */



/*

 * Hardware virtualization extension instructions may fault if a

arch/x86/kvm/kvm_cache_regs.h

+15 −0
Original line number Diff line number Diff line
@@ -84,4 +84,19 @@ static inline u64 kvm_read_edx_eax(struct kvm_vcpu *vcpu) 
		| ((u64)(kvm_register_read(vcpu, VCPU_REGS_RDX) & -1u) << 32);

}



static inline void enter_guest_mode(struct kvm_vcpu *vcpu)

{

	vcpu->arch.hflags |= HF_GUEST_MASK;

}



static inline void leave_guest_mode(struct kvm_vcpu *vcpu)

{

	vcpu->arch.hflags &= ~HF_GUEST_MASK;

}



static inline bool is_guest_mode(struct kvm_vcpu *vcpu)

{

	return vcpu->arch.hflags & HF_GUEST_MASK;

}



#endif