From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7C0FC54FD0 for ; Thu, 23 Apr 2020 23:07:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AA51920780 for ; Thu, 23 Apr 2020 23:07:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728883AbgDWXH3 (ORCPT ); Thu, 23 Apr 2020 19:07:29 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:50442 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728602AbgDWXGy (ORCPT ); Thu, 23 Apr 2020 19:06:54 -0400 Received: from [192.168.4.242] (helo=deadeye) by shadbolt.decadent.org.uk with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1jRkvg-0004tl-7a; Fri, 24 Apr 2020 00:06:48 +0100 Received: from ben by deadeye with local (Exim 4.93) (envelope-from ) id 1jRkvc-00E71X-AU; Fri, 24 Apr 2020 00:06:44 +0100 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, Denis Kirjanov , "Paolo Bonzini" , "Oliver Upton" Date: Fri, 24 Apr 2020 00:07:24 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) X-Patchwork-Hint: ignore Subject: [PATCH 3.16 217/245] KVM: nVMX: Don't emulate instructions in guest mode In-Reply-To: X-SA-Exim-Connect-IP: 192.168.4.242 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.83-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Paolo Bonzini commit 07721feee46b4b248402133228235318199b05ec upstream. vmx_check_intercept is not yet fully implemented. To avoid emulating instructions disallowed by the L1 hypervisor, refuse to emulate instructions by default. [Made commit, added commit msg - Oliver] Signed-off-by: Oliver Upton Signed-off-by: Paolo Bonzini [bwh: Backported to 3.16: adjust filename, context] Signed-off-by: Ben Hutchings --- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -8938,7 +8938,7 @@ static int vmx_check_intercept(struct kv struct x86_instruction_info *info, enum x86_intercept_stage stage) { - return X86EMUL_CONTINUE; + return X86EMUL_UNHANDLEABLE; } static struct kvm_x86_ops vmx_x86_ops = {