From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl0-f69.google.com (mail-pl0-f69.google.com [209.85.160.69]) by kanga.kvack.org (Postfix) with ESMTP id DE8826B0003 for ; Fri, 16 Feb 2018 09:28:13 -0500 (EST) Received: by mail-pl0-f69.google.com with SMTP id q5so2283215pll.17 for ; Fri, 16 Feb 2018 06:28:13 -0800 (PST) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id d2si1434003pgn.504.2018.02.16.06.28.12 for (version=TLS1 cipher=AES128-SHA bits=128/128); Fri, 16 Feb 2018 06:28:12 -0800 (PST) Date: Fri, 16 Feb 2018 15:28:08 +0100 From: Michal Hocko Subject: Re: [PATCH] mm: don't defer struct page initialization for Xen pv guests Message-ID: <20180216142808.GS7275@dhcp22.suse.cz> References: <20180216133726.30813-1-jgross@suse.com> <20180216135940.GQ7275@dhcp22.suse.cz> <1424bb25-7d6a-ee21-83b4-0e90369d6132@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1424bb25-7d6a-ee21-83b4-0e90369d6132@suse.com> Sender: owner-linux-mm@kvack.org List-ID: To: Juergen Gross Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, xen-devel@lists.xenproject.org, akpm@linux-foundation.org, stable@vger.kernel.org, Pavel Tatashin On Fri 16-02-18 15:02:17, Juergen Gross wrote: > On 16/02/18 14:59, Michal Hocko wrote: > > [CC Pavel] > > > > On Fri 16-02-18 14:37:26, Juergen Gross wrote: > >> Commit f7f99100d8d95dbcf09e0216a143211e79418b9f ("mm: stop zeroing > >> memory during allocation in vmemmap") broke Xen pv domains in some > >> configurations, as the "Pinned" information in struct page of early > >> page tables could get lost. > > > > Could you be more specific please? > > In which way? Do you want to see the resulting crash in the commit > message or some more background information? ideally both. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org