In 64-bit mode, when the destination is a register, the assignment is done according to the operand size. Otherwise (memory operand or no 64-bit mode), a 16-bit assignment is performed.
Currently, 16-bit assignment is always done to the destination. Signed-off-by: Nadav Amit <[email protected]> --- arch/x86/kvm/emulate.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index a151f8d..9b5d97d 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3235,7 +3235,8 @@ static int em_lidt(struct x86_emulate_ctxt *ctxt) static int em_smsw(struct x86_emulate_ctxt *ctxt) { - ctxt->dst.bytes = 2; + if (ctxt->dst.type == OP_MEM) + ctxt->dst.bytes = 2; ctxt->dst.val = ctxt->ops->get_cr(ctxt, 0); return X86EMUL_CONTINUE; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
