Commit da6c6a7c authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
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KVM: x86: Add a helper to handle legal GPA with an alignment requirement 



Add a helper to genericize checking for a legal GPA that also must
conform to an arbitrary alignment, and use it in the existing
page_address_valid().  Future patches will replace open coded variants
in VMX and SVM.

Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
Message-Id: <20210204000117.3303214-5-seanjc@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 4bda0e97

arch/x86/kvm/cpuid.h

+7 −1
Original line number Diff line number Diff line
@@ -46,9 +46,15 @@ static inline bool kvm_vcpu_is_illegal_gpa(struct kvm_vcpu *vcpu, gpa_t gpa) 
	return !kvm_vcpu_is_legal_gpa(vcpu, gpa);

}



static inline bool kvm_vcpu_is_legal_aligned_gpa(struct kvm_vcpu *vcpu,

						 gpa_t gpa, gpa_t alignment)

{

	return IS_ALIGNED(gpa, alignment) && kvm_vcpu_is_legal_gpa(vcpu, gpa);

}



static inline bool page_address_valid(struct kvm_vcpu *vcpu, gpa_t gpa)

{

	return PAGE_ALIGNED(gpa) && kvm_vcpu_is_legal_gpa(vcpu, gpa);

	return kvm_vcpu_is_legal_aligned_gpa(vcpu, gpa, PAGE_SIZE);

}



struct cpuid_reg {