KVM: s390: pfmf: handle address overflows

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>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 752a1ac1aab6..b8327b8fdb8f 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 */