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Diffstat (limited to 'drivers/kvm/x86_emulate.c')
-rw-r--r--drivers/kvm/x86_emulate.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 7513cdd..bcf872b 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -833,8 +833,9 @@ done_prefixes:
dst.ptr = (unsigned long *)cr2;
dst.bytes = (d & ByteOp) ? 1 : op_bytes;
if (d & BitOp) {
- dst.ptr += src.val / BITS_PER_LONG;
- dst.bytes = sizeof(long);
+ unsigned long mask = ~(dst.bytes * 8 - 1);
+
+ dst.ptr = (void *)dst.ptr + (src.val & mask) / 8;
}
if (!(d & Mov) && /* optimisation - avoid slow emulated read */
((rc = ops->read_emulated((unsigned long)dst.ptr,
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