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[GIT,PULL,49/52] KVM: s390: pfmf: handle address overflows

Message ID 1465930649-181383-50-git-send-email-borntraeger@de.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Christian Borntraeger June 14, 2016, 6:57 p.m. UTC 
From: David Hildenbrand <dahi@linux.vnet.ibm.com>

In theory, end could always end up being < start, if overflowing to 0.
Although very unlikely for now, let's just fix it.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
 arch/s390/kvm/priv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 752a1ac..b8327b8 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -715,7 +715,7 @@  static int handle_pfmf(struct kvm_vcpu *vcpu)
 		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
 	}
 
-	while (start < end) {
+	while (start != end) {
 		unsigned long useraddr;
 
 		/* Translate guest address to host address */