KVM: x86 emulator: Use a register for ____emulate_2op() destination

Most x86 two operand instructions allow the destination to be a memory operand,
but IMUL (for example) requires that the destination be a register.  Change
____emulate_2op() to take a register for both source and destination so we
can invoke IMUL.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 7818c91deb63..81b0f8848960 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -200,7 +200,7 @@ struct group_dual {
                         _PRE_EFLAGS("0", "4", "2")                      \
                         _op _suffix " %"_x"3,%1; "                      \
                         _POST_EFLAGS("0", "4", "2")                     \
-                        : "=m" (_eflags), "=m" (*(_dsttype*)&(_dst).val),\
+                        : "=m" (_eflags), "+q" (*(_dsttype*)&(_dst).val),\
                           "=&r" (_tmp)                                  \
                         : _y ((_src).val), "i" (EFLAGS_MASK));          \
         } while (0)