From patchwork Wed Nov 4 21:24:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eduardo Habkost X-Patchwork-Id: 7553691 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 20286BEEA4 for ; Wed, 4 Nov 2015 21:25:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5F0FD204E3 for ; Wed, 4 Nov 2015 21:25:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 76912204E0 for ; Wed, 4 Nov 2015 21:25:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030691AbbKDVZK (ORCPT ); Wed, 4 Nov 2015 16:25:10 -0500 Received: from mx1.redhat.com ([209.132.183.28]:35931 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030570AbbKDVZJ (ORCPT ); Wed, 4 Nov 2015 16:25:09 -0500 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (Postfix) with ESMTPS id 3C7418F4F3; Wed, 4 Nov 2015 21:25:09 +0000 (UTC) Received: from localhost (ovpn-113-172.phx2.redhat.com [10.3.113.172]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id tA4LP7fp008929; Wed, 4 Nov 2015 16:25:08 -0500 From: Eduardo Habkost To: qemu-devel@nongnu.org Cc: Xiao Guangrong , Paolo Bonzini , kvm@vger.kernel.org, Richard Henderson Subject: [PATCH 1/2] target-i386: tcg: Accept clwb instruction Date: Wed, 4 Nov 2015 19:24:45 -0200 Message-Id: <1446672286-9136-2-git-send-email-ehabkost@redhat.com> In-Reply-To: <1446672286-9136-1-git-send-email-ehabkost@redhat.com> References: <1446672286-9136-1-git-send-email-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Accept the clwb instruction (66 0F AE /6) if its corresponding feature flag is enabled on CPUID[7]. Signed-off-by: Eduardo Habkost Reviewed-by: Richard Henderson --- target-i386/translate.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/target-i386/translate.c b/target-i386/translate.c index b400d24..bac1685 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -7716,10 +7716,21 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, } break; case 5: /* lfence */ - case 6: /* mfence */ if ((modrm & 0xc7) != 0xc0 || !(s->cpuid_features & CPUID_SSE2)) goto illegal_op; break; + case 6: /* mfence/clwb */ + if (s->prefix & PREFIX_DATA) { + /* clwb */ + if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLWB)) + goto illegal_op; + gen_lea_modrm(env, s, modrm); + } else { + /* mfence */ + if ((modrm & 0xc7) != 0xc0 || !(s->cpuid_features & CPUID_SSE2)) + goto illegal_op; + } + break; case 7: /* sfence / clflush */ if ((modrm & 0xc7) == 0xc0) { /* sfence */