From patchwork Fri Aug 6 07:21:59 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Yongjun X-Patchwork-Id: 117719 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.4/8.14.3) with ESMTP id o767Nqb1028761 for ; Fri, 6 Aug 2010 07:23:52 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933897Ab0HFHXu (ORCPT ); Fri, 6 Aug 2010 03:23:50 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:53362 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S933221Ab0HFHXt (ORCPT ); Fri, 6 Aug 2010 03:23:49 -0400 Received: from tang.cn.fujitsu.com (tang.cn.fujitsu.com [10.167.250.3]) by song.cn.fujitsu.com (Postfix) with ESMTP id 87E4B17014C; Fri, 6 Aug 2010 15:23:47 +0800 (CST) Received: from fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id o767KhW1017321; Fri, 6 Aug 2010 15:20:43 +0800 Received: from [10.167.141.76] (unknown [10.167.141.76]) by fnst.cn.fujitsu.com (Postfix) with ESMTPA id 3D2BE14C012; Fri, 6 Aug 2010 15:24:36 +0800 (CST) Message-ID: <4C5BB817.7030800@cn.fujitsu.com> Date: Fri, 06 Aug 2010 15:21:59 +0800 From: Wei Yongjun User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.10) Gecko/20100528 Thunderbird/3.0.5 MIME-Version: 1.0 To: Avi Kivity CC: kvm@vger.kernel.org Subject: [PATCH 3/3] KVM: x86 emulator: mask group 8 instruction as BitOp References: <4C5BB725.3060609@cn.fujitsu.com> In-Reply-To: <4C5BB725.3060609@cn.fujitsu.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 06 Aug 2010 07:23:53 +0000 (UTC) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index e7e3d2d..dc6a74e 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -746,6 +746,9 @@ static void fetch_bit_operand(struct decode_cache *c) c->dst.addr.mem += (c->src.val & mask) / 8; } } + + /* only subword offset */ + c->src.val &= (c->dst.bytes << 3) - 1; } static int read_emulated(struct x86_emulate_ctxt *ctxt, @@ -2346,7 +2349,7 @@ static struct opcode twobyte_table[256] = { D(DstReg | SrcMem16 | ModRM | Mov), /* 0xB8 - 0xBF */ N, N, - G(0, group8), D(DstMem | SrcReg | ModRM | BitOp | Lock), + G(BitOp, group8), D(DstMem | SrcReg | ModRM | BitOp | Lock), N, N, D(ByteOp | DstReg | SrcMem | ModRM | Mov), D(DstReg | SrcMem16 | ModRM | Mov), /* 0xC0 - 0xCF */ @@ -3420,8 +3423,6 @@ twobyte_insn: break; case 0xab: bts: /* bts */ - /* only subword offset */ - c->src.val &= (c->dst.bytes << 3) - 1; emulate_2op_SrcV_nobyte("bts", c->src, c->dst, ctxt->eflags); break; case 0xac: /* shrd imm8, r, r/m */ @@ -3449,8 +3450,6 @@ twobyte_insn: break; case 0xb3: btr: /* btr */ - /* only subword offset */ - c->src.val &= (c->dst.bytes << 3) - 1; emulate_2op_SrcV_nobyte("btr", c->src, c->dst, ctxt->eflags); break; case 0xb6 ... 0xb7: /* movzx */ @@ -3472,8 +3471,6 @@ twobyte_insn: break; case 0xbb: btc: /* btc */ - /* only subword offset */ - c->src.val &= (c->dst.bytes << 3) - 1; emulate_2op_SrcV_nobyte("btc", c->src, c->dst, ctxt->eflags); break; case 0xbe ... 0xbf: /* movsx */