[0/2] Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP & fixup race condition on PG_dcache_clean
Message ID | 20221023133205.3493564-1-guoren@kernel.org |
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[2620:137:e000::1:20]) by mx.google.com with ESMTP id ck6-20020a0564021c0600b004615855c483si5009005edb.98.2022.10.23.06.38.27; Sun, 23 Oct 2022 06:38:51 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="Y22/Nw6q"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229618AbiJWNdz (ORCPT <rfc822;pwkd43@gmail.com> + 99 others); Sun, 23 Oct 2022 09:33:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230402AbiJWNdv (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Sun, 23 Oct 2022 09:33:51 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 42CAC3AE49; Sun, 23 Oct 2022 06:33:51 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id EBFB0B80BFF; Sun, 23 Oct 2022 13:33:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11926C4314B; Sun, 23 Oct 2022 13:33:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666532028; bh=QJ7fR+gHywsczUhCwjPOdR2Nl2xq5s+MM7Zax4w8w9w=; h=From:To:Cc:Subject:Date:From; b=Y22/Nw6qhMXCSnZbqhtnLDFteTfssdSmaPHl1PMAiT1VRJoveIq/uCM0ERbB8h131 4sDIRXSjSdnNyY8heVMn78H9JBlSjFGUBEzNBN0WfG6fy5paB+J07Rmt/gbax7UpP7 BbBXon3Yfgn6RQTnKs/LY0SBUtZaGb+YS3fJAAYU0w7GLuiECDx+TjqyQHzDi9a7HE cSFn0brFJiP6dK7IAvjvUmrSjQV1XTkxHkBJRYCdzJc0TNOSPuTwin8/la2vRy0naR kdb++uEG6YhGrvaVccMsffZPkSKfmY7zRYlHt0hU//YhzCGPtZYTfmnJHnLme2VcPq V3M5NIC2fja9Q== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, palmer@rivosinc.com, heiko@sntech.de, arnd@arndb.de, songmuchun@bytedance.com, catalin.marinas@arm.com, chenhuacai@loongson.cn, Conor.Dooley@microchip.com, paul.walmsley@sifive.com, aou@eecs.berkeley.edu Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-mm@kvack.org, Guo Ren <guoren@linux.alibaba.com> Subject: [PATCH 0/2] Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP & fixup race condition on PG_dcache_clean Date: Sun, 23 Oct 2022 09:32:03 -0400 Message-Id: <20221023133205.3493564-1-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1747485805807108114?= X-GMAIL-MSGID: =?utf-8?q?1747485805807108114?= |
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Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP & fixup race condition on PG_dcache_clean
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Message
Guo Ren
Oct. 23, 2022, 1:32 p.m. UTC
From: Guo Ren <guoren@linux.alibaba.com>
The first patch fixup race condition on PG_dcache_clean which found in
arm64. Then enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP and tested
with simple hugetlbfs test case.
# cat /proc/sys/vm/hugetlb_optimize_vmemmap
1
# echo 8 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
# mount -t hugetlbfs none test/ -o pagesize=2048k
# ./myhugemap_test
# umount test/
# echo 0 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
No problem found.
Guo Ren (2):
riscv: Fixup race condition on PG_dcache_clean in flush_icache_pte
riscv: Enable ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
arch/riscv/Kconfig | 1 +
arch/riscv/include/asm/cacheflush.h | 3 +++
arch/riscv/mm/cacheflush.c | 7 ++++++-
3 files changed, 10 insertions(+), 1 deletion(-)