Commit dfeec843 authored Jan 01, 2014 by Heiko Carstens Committed by Christian Borntraeger Apr 22, 2014

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>

parent bcd84683

include/linux/kvm_host.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -879,6 +879,13 @@ static inline hpa_t pfn_to_hpa(pfn_t pfn)
		return (hpa_t)pfn << PAGE_SHIFT;
		}

		static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa)
		{
		unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa));

		return kvm_is_error_hva(hva);
		}

		static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
		{
		set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);