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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68044ECAAD8 for ; Fri, 16 Sep 2022 22:09:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230046AbiIPWJx (ORCPT ); Fri, 16 Sep 2022 18:09:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41040 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230031AbiIPWJt (ORCPT ); Fri, 16 Sep 2022 18:09:49 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB6D81209A; Fri, 16 Sep 2022 15:09:43 -0700 (PDT) Received: from zn.tnic (p5de8e9fe.dip0.t-ipconnect.de [93.232.233.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 8B2D71EC0754; Sat, 17 Sep 2022 00:09:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1663366177; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=pi/ThYMMvWpMaKV1N3tail3zxhGqRMvrp+4EnPCu9OM=; b=jgHcd7ncTZaHyhMNg/eVeEADeladLatoLsLZViRGZoyhpbq8Vt1twRP/LQTFOpKzJkmm8f TrSWRqKGczffo+4tCK5/VUQ4JdxTJwInmmNLhckfVDpxA/Cy/pVHV11zJrS+RhmxFC9ney z84WGAWpfYiB0M2Sy3u9noW2Lm2U/y4= Date: Sat, 17 Sep 2022 00:09:31 +0200 From: Borislav Petkov To: Jim Mattson Cc: Sean Christopherson , Avi Kivity , Babu Moger , "Chang S. Bae" , Dave Hansen , "H. Peter Anvin" , Ingo Molnar , Joerg Roedel , Josh Poimboeuf , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Paolo Bonzini , Pawan Gupta , Peter Zijlstra , Thomas Gleixner , Wyes Karny , x86@kernel.org Subject: Re: [PATCH 2/5] KVM: svm: Disallow EFER.LMSLE on hardware that doesn't support it Message-ID: References: <20220916045832.461395-1-jmattson@google.com> <20220916045832.461395-3-jmattson@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 16, 2022 at 02:00:26PM -0700, Jim Mattson wrote: > It's possible that SLES11 Xen 4.0 sets the bit, but never actually > uses truncated segments in 64-bit mode. In any case, according to the > original commit, it won't boot if setting EFER.LMSLE is not allowed. How is SLE11 at all relevant to the upstream kernel? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette