diff options
| -rw-r--r-- | drivers/kvm/x86_emulate.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index 7513cddb929f..bcf872bdaf74 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, |