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KVM: s390: pfmf: handle address overflows

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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>
This commit is contained in:
David Hildenbrand 2016-05-12 14:07:05 +02:00 committed by Christian Borntraeger
parent 1824c723ac
commit 695be0e7a2
1 changed files with 1 additions and 1 deletions
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arch/s390/kvm/priv.c
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@ -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 */