From patchwork Thu Feb 27 13:36:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 230417 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 CC25FC3F359 for ; Thu, 27 Feb 2020 14:09:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 953DE20578 for ; Thu, 27 Feb 2020 14:09:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582812592; bh=nAIOlk6T/CG6odHWpg4tcELEnsZORFZp2EmQ2pWIWeA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vhprETID1l+NndFH9waaHIFqupmdRbNJe7JEzftyKdtXhr2szvX257qNFFIlWTC5x 6uliZnCTsZak7Na7R9WqRkP8Fc7UlgRRLmKHMj9tTyjlE54HcjVFZvYqrQPkhoc5oZ WUip1tqrOuidXFdDvXbsvGQJwLKd5RbxPzICk5Us= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388246AbgB0OJv (ORCPT ); Thu, 27 Feb 2020 09:09:51 -0500 Received: from mail.kernel.org ([198.145.29.99]:47888 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388181AbgB0OJv (ORCPT ); Thu, 27 Feb 2020 09:09:51 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id F325C21D7E; Thu, 27 Feb 2020 14:09:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582812590; bh=nAIOlk6T/CG6odHWpg4tcELEnsZORFZp2EmQ2pWIWeA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ci3QGV7OWiKvHZxmL5Qy8buNctaOkiNxY00NlEyj7jPbn56rs2plw50dCn8nUFzCR u9wktbK8xW54MrGNpHbUJiLr73OSa2Y14qtOQRq9h2HdZ/hQ2cIwNTZwN/7LlsYVnR YIiaRr5yo8xdOlFy29Nq8ls3FNzFf5kG3SQIwpFA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Oliver Upton , Paolo Bonzini Subject: [PATCH 5.4 077/135] KVM: nVMX: Dont emulate instructions in guest mode Date: Thu, 27 Feb 2020 14:36:57 +0100 Message-Id: <20200227132240.979853469@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200227132228.710492098@linuxfoundation.org> References: <20200227132228.710492098@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 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. Cc: stable@vger.kernel.org [Made commit, added commit msg - Oliver] Signed-off-by: Oliver Upton Signed-off-by: Paolo Bonzini Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/vmx/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7151,7 +7151,7 @@ static int vmx_check_intercept(struct kv } /* TODO: check more intercepts... */ - return X86EMUL_CONTINUE; + return X86EMUL_UNHANDLEABLE; } #ifdef CONFIG_X86_64