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KVM: add kvm_is_error_gpa() helper
It's quite common (in the s390 guest access code) to test if a guest physical address points to a valid guest memory area or not. So add a simple helper function in common code, since this might be of interest for other architectures as well. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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@ -879,6 +879,13 @@ static inline hpa_t pfn_to_hpa(pfn_t pfn)
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return (hpa_t)pfn << PAGE_SHIFT;
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}
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static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa)
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{
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unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa));
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return kvm_is_error_hva(hva);
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}
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static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
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{
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set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
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