From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932240AbdJZIlW (ORCPT ); Thu, 26 Oct 2017 04:41:22 -0400 Received: from mx2.suse.de ([195.135.220.15]:49167 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751166AbdJZIlV (ORCPT ); Thu, 26 Oct 2017 04:41:21 -0400 Subject: Re: [PATCH 09/18] x86/asm/64: De-Xen-ify our NMI code To: Andy Lutomirski , X86 ML Cc: Borislav Petkov , "linux-kernel@vger.kernel.org" , Brian Gerst , Dave Hansen , Linus Torvalds , Boris Ostrovsky References: <3d8c7f2956303a35627876dade5a8cab1490f45d.1509006199.git.luto@kernel.org> From: Juergen Gross Message-ID: Date: Thu, 26 Oct 2017 10:41:18 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <3d8c7f2956303a35627876dade5a8cab1490f45d.1509006199.git.luto@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: de-DE Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 26/10/17 10:26, Andy Lutomirski wrote: > Xen PV is fundamentally incompatible with our fancy NMI code: it > doesn't use IST at all, and Xen entries clobber two stack slots > below the hardware frame. > > Drop Xen PV support from our NMI code entirely. > > Cc: Juergen Gross > Cc: Boris Ostrovsky > Signed-off-by: Andy Lutomirski Acked-by: Juergen Gross Juergen