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=-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 9A215C35DF9 for ; Thu, 27 Feb 2020 14:22:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E05024656 for ; Thu, 27 Feb 2020 14:22:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582813324; bh=JlbqrfUdpu7uk8u0aO5BIhvoEvR9l6eiTJyLp5+Xs20=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QOsP0lsENEPU5FxIwLDChbHji0PRvEsQWlYeTpzxf6iE6GqVcYz2hNfgfKhZbAmRQ 2Y2T9ETDAdKyF79/mZQHXg/QRrkFJaNI/6IxG1o5Eo7o/89htag+6YVLv2abBx5M8a RrPF/XDSEHr6ngB/tlPS07FPzg6BJVvLMb+SeiH4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389839AbgB0OWD (ORCPT ); Thu, 27 Feb 2020 09:22:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:56242 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389457AbgB0OQN (ORCPT ); Thu, 27 Feb 2020 09:16:13 -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 F3EF220578; Thu, 27 Feb 2020 14:16:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582812973; bh=JlbqrfUdpu7uk8u0aO5BIhvoEvR9l6eiTJyLp5+Xs20=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FhCUpOwiPh1hA+hPMLnhPxIOOQ5DX1ji1xPpQSBZ37uosmO3RFmgqyjR2hRxf0V9n a7ZnlNWhxAZ5SrM5ZuEdKhKz0ETbiSHhGMWOWkRaPgAmyyoJZUmWRWpKZm3Ss04sJp KnvSeTPVkZuGrE+s2Zici+hJ4qWjwdUfXVMPM3GE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Oliver Upton , Paolo Bonzini Subject: [PATCH 5.5 087/150] KVM: nVMX: Dont emulate instructions in guest mode Date: Thu, 27 Feb 2020 14:37:04 +0100 Message-Id: <20200227132245.682892470@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200227132232.815448360@linuxfoundation.org> References: <20200227132232.815448360@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 @@ -7165,7 +7165,7 @@ static int vmx_check_intercept(struct kv } /* TODO: check more intercepts... */ - return X86EMUL_CONTINUE; + return X86EMUL_UNHANDLEABLE; } #ifdef CONFIG_X86_64