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: Sean Christopherson <seanjc@google.com>
Message-Id: <
20210204000117.
3303214-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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 {