KVM: x86 emulator: Use opcode::execute for INS/OUTS from/to port in DX

INSB       : 6C
INSW/INSD  : 6D
OUTSB      : 6E
OUTSW/OUTSD: 6F

The I/O port address is read from the DX register when we decode the
operand because we see the SrcDX/DstDX flag is set.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 2 insertions, 12 deletions

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 4cd3313b413..ac8e5ed7883 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -3321,8 +3321,8 @@ static struct opcode opcode_table[256] = {
         I(DstReg | SrcMem | ModRM | Src2Imm, em_imul_3op),
         I(SrcImmByte | Mov | Stack, em_push),
         I(DstReg | SrcMem | ModRM | Src2ImmByte, em_imul_3op),
-        D2bvIP(DstDI | SrcDX | Mov | String, ins, check_perm_in), /* insb, insw/insd */
-        D2bvIP(SrcSI | DstDX | String, outs, check_perm_out), /* outsb, outsw/outsd */
+        I2bvIP(DstDI | SrcDX | Mov | String, em_in, ins, check_perm_in), /* insb, insw/insd */
+        I2bvIP(SrcSI | DstDX | String, em_out, outs, check_perm_out), /* outsb, outsw/outsd */
         /* 0x70 - 0x7F */
         X16(D(SrcImmByte)),
         /* 0x80 - 0x87 */
@@ -4027,16 +4027,6 @@ special_insn:
                         goto cannot_emulate;
                 ctxt->dst.val = (s32) ctxt->src.val;
                 break;
-        case 0x6c:              /* insb */
-        case 0x6d:              /* insw/insd */
-                ctxt->src.val = ctxt->regs[VCPU_REGS_RDX];
-                rc = em_in(ctxt);
-                break;
-        case 0x6e:              /* outsb */
-        case 0x6f:              /* outsw/outsd */
-                ctxt->dst.val = ctxt->regs[VCPU_REGS_RDX];
-                rc = em_out(ctxt);
-                break;
         case 0x70 ... 0x7f: /* jcc (short) */
                 if (test_cc(ctxt->b, ctxt->eflags))
                         jmp_rel(ctxt, ctxt->src.val);