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x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfJ6KnU9h4pNCjJ8VsuWhP2+rGDZjMqpwUMsXlzK5jSQ4mPxvk/5DSksQ297cYveCQ/8p5ny3cwSZfIawn1b3iffXhvjYazcknyX0DmFuVBG3Wys3NuxR Ftg7+D4qm1zToKl4CvtjGdbIYEb1Fo2NxS+RT5XFTohLJlud8hD/WKQJZmLaveMnaINQr7Czr7lFtUbiDqavXF7aNcTD33/Z5KIYNzNbXV2heilgRyCQD274 X-CM-Analysis: v=2.3 cv=Tq3Iegfh c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=kj9zAlcOel0A:10 a=Kd1tUaAdevIA:10 a=tA7aZXjiAAAA:8 a=P2oPjIs6qmg0OA5TXlUA:9 a=CjuIK1q_8ugA:10 a=kIIFJ0VLUOy1gFZzwZHL:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757820AbeD0LqW (ORCPT ); Fri, 27 Apr 2018 07:46:22 -0400 Received: from 8bytes.org ([81.169.241.247]:38640 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751416AbeD0LqV (ORCPT ); Fri, 27 Apr 2018 07:46:21 -0400 Date: Fri, 27 Apr 2018 13:46:19 +0200 From: "joro@8bytes.org" To: Michal Hocko Cc: "Kani, Toshi" , "linux-kernel@vger.kernel.org" , "bp@suse.de" , "tglx@linutronix.de" , "linux-mm@kvack.org" , "guohanjun@huawei.com" , "wxf.wang@hisilicon.com" , "stable@vger.kernel.org" , "x86@kernel.org" , "akpm@linux-foundation.org" , "willy@infradead.org" , "hpa@zytor.com" , "catalin.marinas@arm.com" , "mingo@redhat.com" , "will.deacon@arm.com" , "cpandya@codeaurora.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH v2 2/2] x86/mm: implement free pmd/pte page interfaces Message-ID: <20180427114619.GV15462@8bytes.org> References: <20180314180155.19492-1-toshi.kani@hpe.com> <20180314180155.19492-3-toshi.kani@hpe.com> <20180426141926.GN15462@8bytes.org> <1524759629.2693.465.camel@hpe.com> <20180426172327.GQ15462@8bytes.org> <1524764948.2693.478.camel@hpe.com> <20180426200737.GS15462@8bytes.org> <1524781764.2693.503.camel@hpe.com> <20180427073719.GT15462@8bytes.org> <20180427113923.GF17484@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180427113923.GF17484@dhcp22.suse.cz> User-Agent: Mutt/1.5.24 (2015-08-30) 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, Apr 27, 2018 at 01:39:23PM +0200, Michal Hocko wrote: > On Fri 27-04-18 09:37:20, joro@8bytes.org wrote: > [...] > > So until we make the generic ioremap code in lib/ioremap.c smarter about > > unmapping/remapping ranges the best solution is making my fix work again > > by reverting your patch. > > Could you reuse the same mmu_gather mechanism as we use in the > zap_*_range? Yeah, maybe, I havn't looked into the details yet. At least something similar is needed. Joerg