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Thu, 17 May 2018 02:47:59 -0400 Received: from mx2.suse.de ([195.135.220.15]:58153 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750826AbeEQGr6 (ORCPT ); Thu, 17 May 2018 02:47:58 -0400 Date: Thu, 17 May 2018 08:47:55 +0200 From: Michal Hocko To: Toshi Kani Cc: akpm@linux-foundation.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, cpandya@codeaurora.org, linux-mm@kvack.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH v3 2/3] ioremap: Update pgtable free interfaces with addr Message-ID: <20180517064755.GP12670@dhcp22.suse.cz> References: <20180516233207.1580-1-toshi.kani@hpe.com> <20180516233207.1580-3-toshi.kani@hpe.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180516233207.1580-3-toshi.kani@hpe.com> User-Agent: Mutt/1.9.5 (2018-04-13) 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 Wed 16-05-18 17:32:06, Kani Toshimitsu wrote: > From: Chintan Pandya > > This patch ("mm/vmalloc: Add interfaces to free unmapped > page table") adds following 2 interfaces to free the page > table in case we implement huge mapping. > > pud_free_pmd_page() and pmd_free_pte_page() > > Some architectures (like arm64) needs to do proper TLB > maintanance after updating pagetable entry even in map. > Why ? Read this, > https://patchwork.kernel.org/patch/10134581/ Please add that information to the changelog. -- Michal Hocko SUSE Labs