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Fri, 27 Apr 2018 07:39:29 -0400 Received: from mx2.suse.de ([195.135.220.15]:59435 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757545AbeD0Lj1 (ORCPT ); Fri, 27 Apr 2018 07:39:27 -0400 Date: Fri, 27 Apr 2018 13:39:23 +0200 From: Michal Hocko To: "joro@8bytes.org" 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: <20180427113923.GF17484@dhcp22.suse.cz> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180427073719.GT15462@8bytes.org> User-Agent: Mutt/1.9.4 (2018-02-28) 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 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? -- Michal Hocko SUSE Labs