summaryrefslogtreecommitdiffstats
path: root/arch/ia64/kvm/mmio.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ia64/kvm/mmio.c')
-rw-r--r--arch/ia64/kvm/mmio.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/ia64/kvm/mmio.c b/arch/ia64/kvm/mmio.c
index 351bf70da463..7f1a858bc69f 100644
--- a/arch/ia64/kvm/mmio.c
+++ b/arch/ia64/kvm/mmio.c
@@ -159,7 +159,8 @@ static void mmio_access(struct kvm_vcpu *vcpu, u64 src_pa, u64 *dest,
if (p->u.ioreq.state == STATE_IORESP_READY) {
if (dir == IOREQ_READ)
- *dest = p->u.ioreq.data;
+ /* it's necessary to ensure zero extending */
+ *dest = p->u.ioreq.data & (~0UL >> (64-(s*8)));
} else
panic_vm(vcpu);
out: