From fb2c264105c64511dbd1a7488b482960895aace4 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 16 Aug 2010 17:50:56 +0300 Subject: [PATCH] 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 --- arch/x86/kvm/emulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 7818c91..81b0f88 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) -- 2.7.4