From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-268172-1518791294-2-7895034947194190956 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='us-ascii' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518791294; b=QPVSn27Lok/mVKzI4tWFapuLyZ4lkFh+jcDkEg/02kMFpxW t2O2dhtHB6x8sUmcrVZerylSGRSGeqpvb4kHXpYKhaMWw+plw6oGUhDhCyxr8TK5 73/BUPoJR68iyrc8K4H/cZw8EkTeS5yk/1qvk4+YAHLMaQsxYeelp9Klz8oVMLeT ldsxUG4nKbkVZzPq4RA91agmO3Gimy5if9lKxMMigyWzOOnJCvUoba1FSR4oSGrO Kro2NpJ8onwR1UhNn/B/aTXc2dYNsGGUOzXGxtgRHfXVOHrq+jLtw78hiFCpn2mT Qr5lX0hzLpxOTQhSh+QL0eet4FugHesearoB8Cw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to:sender :list-id; s=arctest; t=1518791294; bh=KInnMT1aB8P+O6GlBi7HRl+kCd 0e5dCORmY4v6H9H2c=; b=d3pg5vU8oulWh/aqzEv+D7qicIcsJXiR5kBGaojjlZ UQL5kQWT6J1ajQmNErFCTT+1/oAuHq5DsJ2eAM3RG/U5MHwXckpBp1rUyhsiccto lW4kGknXGUUTfHKSwvclCeRRNeh7bB23rBxxliizpcToD9hAmbh/P4sVkjvR6Kf+ VaFP/w4HRNkw8zDUPb1N4y6VV9XyiNKP9tAX3ogk3nyS/Iuf0wvElAu14pT/vdvq 8MtI8h5L/ZY8qOudcF4tYn6hrzDTqzORe7pVnE63C28BHFV67cnX/7I8mAoV/l76 YMhkFMd1Z6q/fGSIZgToODsaJRU2VPWfwJjNQhR7rxXw== ARC-Authentication-Results: i=1; mx4.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=kernel.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=orgdomain_pass; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=kernel.org header.result=pass header_is_org_domain=yes Authentication-Results: mx4.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=kernel.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=orgdomain_pass; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=kernel.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1034365AbeBPO2L (ORCPT ); Fri, 16 Feb 2018 09:28:11 -0500 Received: from mx2.suse.de ([195.135.220.15]:58556 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1034273AbeBPO2L (ORCPT ); Fri, 16 Feb 2018 09:28:11 -0500 Date: Fri, 16 Feb 2018 15:28:08 +0100 From: Michal Hocko 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 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> User-Agent: Mutt/1.9.3 (2018-01-21) Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 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