From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EACF9C433F5 for ; Wed, 17 Nov 2021 08:52:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 87AAE60EBD for ; Wed, 17 Nov 2021 08:52:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 87AAE60EBD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id F042D6B006C; Wed, 17 Nov 2021 03:52:11 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id EB4AB6B0072; Wed, 17 Nov 2021 03:52:11 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DA40E6B0073; Wed, 17 Nov 2021 03:52:11 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0176.hostedemail.com [216.40.44.176]) by kanga.kvack.org (Postfix) with ESMTP id CC42B6B006C for ; Wed, 17 Nov 2021 03:52:11 -0500 (EST) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 8323286302 for ; Wed, 17 Nov 2021 08:52:01 +0000 (UTC) X-FDA: 78817804842.08.E7E6A82 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf01.hostedemail.com (Postfix) with ESMTP id 0A80E5092EC8 for ; Wed, 17 Nov 2021 08:51:59 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 14582D6E; Wed, 17 Nov 2021 00:52:00 -0800 (PST) Received: from [10.163.79.62] (unknown [10.163.79.62]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E70A43F5A1; Wed, 17 Nov 2021 00:51:52 -0800 (PST) Subject: Re: [RFC 1/3] mm: ptep_clear() page table helper To: Pasha Tatashin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, akpm@linux-foundation.org, rientjes@google.com, pjt@google.com, weixugc@google.com, gthelen@google.com, mingo@redhat.com, corbet@lwn.net, will@kernel.org, rppt@kernel.org, keescook@chromium.org, tglx@linutronix.de, peterz@infradead.org, masahiroy@kernel.org, samitolvanen@google.com, dave.hansen@linux.intel.com, x86@kernel.org, frederic@kernel.org, hpa@zytor.com, aneesh.kumar@linux.ibm.com References: <20211116220038.116484-1-pasha.tatashin@soleen.com> <20211116220038.116484-2-pasha.tatashin@soleen.com> From: Anshuman Khandual Message-ID: Date: Wed, 17 Nov 2021 14:21:47 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20211116220038.116484-2-pasha.tatashin@soleen.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Stat-Signature: an1ggrxmh8811xx6b86cpj9x6qahyjtn X-Rspamd-Queue-Id: 0A80E5092EC8 X-Rspamd-Server: rspam07 Authentication-Results: imf01.hostedemail.com; dkim=none; spf=pass (imf01.hostedemail.com: domain of anshuman.khandual@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=anshuman.khandual@arm.com; dmarc=pass (policy=none) header.from=arm.com X-HE-Tag: 1637139119-18672 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 11/17/21 3:30 AM, Pasha Tatashin wrote: > diff --git a/Documentation/vm/arch_pgtable_helpers.rst b/Documentation/vm/arch_pgtable_helpers.rst > index 552567d863b8..fbe06ec75370 100644 > --- a/Documentation/vm/arch_pgtable_helpers.rst > +++ b/Documentation/vm/arch_pgtable_helpers.rst > @@ -66,9 +66,11 @@ PTE Page Table Helpers > +---------------------------+--------------------------------------------------+ > | pte_mknotpresent | Invalidates a mapped PTE | > +---------------------------+--------------------------------------------------+ > -| ptep_get_and_clear | Clears a PTE | > +| ptep_clear | Clears a PTE | > +---------------------------+--------------------------------------------------+ > -| ptep_get_and_clear_full | Clears a PTE | > +| ptep_get_and_clear | Clears and returns PTE | > ++---------------------------+--------------------------------------------------+ > +| ptep_get_and_clear_full | Clears and returns PTE (batched PTE unmap) | > +---------------------------+--------------------------------------------------+ > | ptep_test_and_clear_young | Clears young from a PTE | > +---------------------------+--------------------------------------------------+ Just curious. This does not have a corresponding change in mm/debug_vm_pgtable.c ?