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 X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CB75C433E6 for ; Wed, 24 Feb 2021 20:07:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 34C3F64E60 for ; Wed, 24 Feb 2021 20:07:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235269AbhBXUHr (ORCPT ); Wed, 24 Feb 2021 15:07:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:56140 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235283AbhBXUG7 (ORCPT ); Wed, 24 Feb 2021 15:06:59 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7510A64E24; Wed, 24 Feb 2021 20:06:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614197204; bh=axrXK3Oqhx1hjzIewrX2nB/fM2JIWPXy9yjR0sOCWEk=; h=Date:From:To:Subject:In-Reply-To:From; b=uy1GrTPOnHm+QhRD2/mV45xZHGV99B6bfz0icWb1IMOcwMk6Chbap4/PnJJXoWzNW oOC+xRExfTGg5WODWecGVV1gppmcettqENiJTLlpheDALHiv0FID03oShASIQj5CH6 /KVg2Md6E7Ndwr/lsCKDQnNWTrTcrFfaSYYh57Zs= Date: Wed, 24 Feb 2021 12:06:42 -0800 From: Andrew Morton To: akpm@linux-foundation.org, anshuman.khandual@arm.com, dansilsby@gmail.com, kirill.shutemov@linux.intel.com, linux-mm@kvack.org, maobibo@loongson.cn, mike.kravetz@oracle.com, mm-commits@vger.kernel.org, paulburton@kernel.org, ralf@linux-mips.org, rppt@linux.ibm.com, torvalds@linux-foundation.org, tsbogend@alpha.franken.de Subject: [patch 111/173] mm/huge_memory.c: update tlb entry if pmd is changed Message-ID: <20210224200642.rrDUZyoaP%akpm@linux-foundation.org> In-Reply-To: <20210224115824.1e289a6895087f10c41dd8d6@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Bibo Mao Subject: mm/huge_memory.c: update tlb entry if pmd is changed When set_pmd_at is called in function do_huge_pmd_anonymous_page, new tlb entry can be added by software on MIPS platform. Here add update_mmu_cache_pmd when pmd entry is set, and update_mmu_cache_pmd is defined as empty excepts arc/mips platform. This patch has no negative effect on other platforms except arc/mips system. Link: http://lkml.kernel.org/r/1592990792-1923-2-git-send-email-maobibo@loongson.cn Signed-off-by: Bibo Mao Cc: Anshuman Khandual Cc: Daniel Silsby Cc: "Kirill A. Shutemov" Cc: Mike Kravetz Cc: Mike Rapoport Cc: Paul Burton Cc: Ralf Baechle Cc: Thomas Bogendoerfer Signed-off-by: Andrew Morton --- mm/huge_memory.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/huge_memory.c~mm-huge_memoryc-update-tlb-entry-if-pmd-is-changed +++ a/mm/huge_memory.c @@ -636,6 +636,7 @@ static vm_fault_t __do_huge_pmd_anonymou lru_cache_add_inactive_or_unevictable(page, vma); pgtable_trans_huge_deposit(vma->vm_mm, vmf->pmd, pgtable); set_pmd_at(vma->vm_mm, haddr, vmf->pmd, entry); + update_mmu_cache_pmd(vma, vmf->address, vmf->pmd); add_mm_counter(vma->vm_mm, MM_ANONPAGES, HPAGE_PMD_NR); mm_inc_nr_ptes(vma->vm_mm); spin_unlock(vmf->ptl); @@ -749,6 +750,7 @@ vm_fault_t do_huge_pmd_anonymous_page(st } else { set_huge_zero_page(pgtable, vma->vm_mm, vma, haddr, vmf->pmd, zero_page); + update_mmu_cache_pmd(vma, vmf->address, vmf->pmd); spin_unlock(vmf->ptl); } } else { _