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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD8D9EB64DB for ; Mon, 19 Jun 2023 23:25:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229905AbjFSXZI (ORCPT ); Mon, 19 Jun 2023 19:25:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229956AbjFSXX2 (ORCPT ); Mon, 19 Jun 2023 19:23:28 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7468A1982 for ; Mon, 19 Jun 2023 16:22:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 127B760FDB for ; Mon, 19 Jun 2023 23:22:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 629C2C433C8; Mon, 19 Jun 2023 23:22:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1687216960; bh=2MiNvflO3qLgF1Fdr/jKDh+JoGcMI2cgeCAkJksQB4U=; h=Date:To:From:Subject:From; b=GOei2EqeQF14szHH9+jKfp8M4IPQB3Z6uMdvMfRN022cABejn+v+m7LrNscpllI3f a3hMfc+4TdvdwxEnnirCMuL+ZWUBEvBgoWMfQKptyu8iXI+O2STTI05BDUrYh/QO5n b9RWEg0fMNe5egCCr9sX3y2TN7I3ZfvSxfvBh8X0= Date: Mon, 19 Jun 2023 16:22:39 -0700 To: mm-commits@vger.kernel.org, yuzhao@google.com, willy@infradead.org, viro@zeniv.linux.org.uk, vincenzo.frascino@arm.com, urezki@gmail.com, sj@kernel.org, shakeelb@google.com, ryabinin.a.a@gmail.com, rppt@kernel.org, roman.gushchin@linux.dev, pasha.tatashin@soleen.com, oleksandr_tyshchenko@epam.com, naoya.horiguchi@nec.com, namhyung@kernel.org, muchun.song@linux.dev, mike.kravetz@oracle.com, mhocko@kernel.org, mark.rutland@arm.com, lstoakes@gmail.com, lkp@intel.com, linmiaohe@huawei.com, kirill.shutemov@linux.intel.com, jolsa@kernel.org, jglisse@redhat.com, jgg@ziepe.ca, irogers@google.com, hch@infradead.org, hannes@cmpxchg.org, glider@google.com, dvyukov@google.com, dimitri.sivanich@hpe.com, daniel@ffwll.ch, brauner@kernel.org, andreyknvl@gmail.com, alex.williamson@redhat.com, alexander.shishkin@linux.intel.com, airlied@gmail.com, adrian.hunter@intel.com, ryan.roberts@arm.com, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-move-ptep_get-and-pmdp_get-helpers.patch removed from -mm tree Message-Id: <20230619232240.629C2C433C8@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: mm: move ptep_get() and pmdp_get() helpers has been removed from the -mm tree. Its filename was mm-move-ptep_get-and-pmdp_get-helpers.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Ryan Roberts Subject: mm: move ptep_get() and pmdp_get() helpers Date: Mon, 12 Jun 2023 16:15:44 +0100 There are many call sites that directly dereference a pte_t pointer. This makes it very difficult to properly encapsulate a page table in the arch code without having to allocate shadow page tables. We will shortly solve this by replacing all the call sites with ptep_get() calls. But there are call sites above the function definition in the header file, so let's move ptep_get() to an earlier location to solve that problem. And move pmdp_get() at the same time to keep it close to ptep_get(). Link: https://lkml.kernel.org/r/20230612151545.3317766-3-ryan.roberts@arm.com Signed-off-by: Ryan Roberts Cc: Adrian Hunter Cc: Alexander Potapenko Cc: Alexander Shishkin Cc: Alex Williamson Cc: Al Viro Cc: Andrey Konovalov Cc: Andrey Ryabinin Cc: Christian Brauner Cc: Christoph Hellwig Cc: Daniel Vetter Cc: Dave Airlie Cc: Dimitri Sivanich Cc: Dmitry Vyukov Cc: Ian Rogers Cc: Jason Gunthorpe Cc: Jérôme Glisse Cc: Jiri Olsa Cc: Johannes Weiner Cc: kernel test robot Cc: Kirill A. Shutemov Cc: Lorenzo Stoakes Cc: Mark Rutland Cc: Matthew Wilcox Cc: Miaohe Lin Cc: Michal Hocko Cc: Mike Kravetz Cc: Mike Rapoport (IBM) Cc: Muchun Song Cc: Namhyung Kim Cc: Naoya Horiguchi Cc: Oleksandr Tyshchenko Cc: Pavel Tatashin Cc: Roman Gushchin Cc: SeongJae Park Cc: Shakeel Butt Cc: Uladzislau Rezki (Sony) Cc: Vincenzo Frascino Cc: Yu Zhao Signed-off-by: Andrew Morton --- include/linux/pgtable.h | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) --- a/include/linux/pgtable.h~mm-move-ptep_get-and-pmdp_get-helpers +++ a/include/linux/pgtable.h @@ -212,6 +212,20 @@ static inline int pudp_set_access_flags( #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif +#ifndef ptep_get +static inline pte_t ptep_get(pte_t *ptep) +{ + return READ_ONCE(*ptep); +} +#endif + +#ifndef pmdp_get +static inline pmd_t pmdp_get(pmd_t *pmdp) +{ + return READ_ONCE(*pmdp); +} +#endif + #ifndef __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long address, @@ -317,20 +331,6 @@ static inline void ptep_clear(struct mm_ ptep_get_and_clear(mm, addr, ptep); } -#ifndef ptep_get -static inline pte_t ptep_get(pte_t *ptep) -{ - return READ_ONCE(*ptep); -} -#endif - -#ifndef pmdp_get -static inline pmd_t pmdp_get(pmd_t *pmdp) -{ - return READ_ONCE(*pmdp); -} -#endif - #ifdef CONFIG_GUP_GET_PXX_LOW_HIGH /* * For walking the pagetables without holding any locks. Some architectures _ Patches currently in -mm which might be from ryan.roberts@arm.com are