From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933547AbdK2PtS (ORCPT ); Wed, 29 Nov 2017 10:49:18 -0500 Received: from mx2.suse.de ([195.135.220.15]:42563 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933027AbdK2PtQ (ORCPT ); Wed, 29 Nov 2017 10:49:16 -0500 Date: Wed, 29 Nov 2017 16:49:08 +0100 From: Borislav Petkov To: "Kirill A. Shutemov" Cc: Ingo Molnar , x86@kernel.org, Thomas Gleixner , "H. Peter Anvin" , Linus Torvalds , Andy Lutomirski , Cyrill Gorcunov , Andi Kleen , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHv2 0/4] x86: 5-level related changes into decompression code Message-ID: <20171129154908.6y4st6xc7hbsey2v@pd.tnic> References: <20171110220645.59944-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20171110220645.59944-1-kirill.shutemov@linux.intel.com> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Nov 11, 2017 at 01:06:41AM +0300, Kirill A. Shutemov wrote: > Hi Ingo, > > Here's updated changes that prepare the code to boot-time switching between > paging modes and handle booting in 5-level mode when bootloader put kernel > image above 4G, but haven't enabled 5-level paging for us. Btw, if I enable CONFIG_X86_5LEVEL with 4.15-rc1 on an AMD box, the box triple-faults and ends up spinning in a reboot loop. Even though it should say: early console in setup code This kernel requires the following features not present on the CPU: la57 Unable to boot - please use a kernel appropriate for your CPU. and halt. A kvm guest still does that but baremetal triple-faults. Ideas? -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --