From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
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@xxxxxxxxxx>
Reviewed-by: Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>
Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
---
include/linux/kvm_host.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 7d21cf9..471d140 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -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);
--
1.8.4.2
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
