From patchwork Tue Mar 9 14:09:12 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gleb Natapov X-Patchwork-Id: 84297 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o29E9siV029337 for ; Tue, 9 Mar 2010 14:09:55 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753369Ab0CIOJv (ORCPT ); Tue, 9 Mar 2010 09:09:51 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48759 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752763Ab0CIOJZ (ORCPT ); Tue, 9 Mar 2010 09:09:25 -0500 Received: from int-mx05.intmail.prod.int.phx2.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.18]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o29E9Pj7021163 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 9 Mar 2010 09:09:25 -0500 Received: from dhcp-1-237.tlv.redhat.com (dhcp-1-237.tlv.redhat.com [10.35.1.237]) by int-mx05.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o29E9OcZ002547 for ; Tue, 9 Mar 2010 09:09:25 -0500 Received: by dhcp-1-237.tlv.redhat.com (Postfix, from userid 13519) id 3C3801336DA; Tue, 9 Mar 2010 16:09:23 +0200 (IST) From: Gleb Natapov To: kvm@vger.kernel.org Subject: [PATCH 14/24] KVM: x86 emulator: cleanup grp3 return value Date: Tue, 9 Mar 2010 16:09:12 +0200 Message-Id: <1268143762-4000-15-git-send-email-gleb@redhat.com> In-Reply-To: <1268143762-4000-1-git-send-email-gleb@redhat.com> References: <1268143762-4000-1-git-send-email-gleb@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.18 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]); Tue, 09 Mar 2010 14:09:55 +0000 (UTC) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 018abb3..6e2b34b 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1394,7 +1394,6 @@ static inline int emulate_grp3(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) { struct decode_cache *c = &ctxt->decode; - int rc = X86EMUL_CONTINUE; switch (c->modrm_reg) { case 0 ... 1: /* test */ @@ -1407,11 +1406,9 @@ static inline int emulate_grp3(struct x86_emulate_ctxt *ctxt, emulate_1op("neg", c->dst, ctxt->eflags); break; default: - DPRINTF("Cannot emulate %02x\n", c->b); - rc = X86EMUL_UNHANDLEABLE; - break; + return 0; } - return rc; + return 1; } static inline int emulate_grp45(struct x86_emulate_ctxt *ctxt, @@ -2370,9 +2367,8 @@ special_insn: c->dst.type = OP_NONE; /* Disable writeback. */ break; case 0xf6 ... 0xf7: /* Grp3 */ - rc = emulate_grp3(ctxt, ops); - if (rc != X86EMUL_CONTINUE) - goto done; + if (!emulate_grp3(ctxt, ops)) + goto cannot_emulate; break; case 0xf8: /* clc */ ctxt->eflags &= ~EFLG_CF;