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@xxxxxxxxxx>
---
arch/x86/kvm/emulate.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 49bfcc7..f6f93b9 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)
--
1.7.1
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