From patchwork Thu Jul 1 01:51:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12353239 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=-15.8 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_RED autolearn=unavailable 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 0552FC11F6A for ; Thu, 1 Jul 2021 01:52:01 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A7C8761241 for ; Thu, 1 Jul 2021 01:52:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A7C8761241 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3321D8D022E; Wed, 30 Jun 2021 21:52:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 308298D0202; Wed, 30 Jun 2021 21:52:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1F7E78D022E; Wed, 30 Jun 2021 21:52:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0161.hostedemail.com [216.40.44.161]) by kanga.kvack.org (Postfix) with ESMTP id ED9DD8D0202 for ; Wed, 30 Jun 2021 21:51:59 -0400 (EDT) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id C71121802ED99 for ; Thu, 1 Jul 2021 01:51:59 +0000 (UTC) X-FDA: 78312343158.10.D84CA1D Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf18.hostedemail.com (Postfix) with ESMTP id 8A702400208A for ; Thu, 1 Jul 2021 01:51:59 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 8B4BF61474; Thu, 1 Jul 2021 01:51:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1625104318; bh=XFuB63iS5k2hf2niZ9v7nEmLoo5ci92rgzRtof4P49s=; h=Date:From:To:Subject:In-Reply-To:From; b=yOisVyqCISVNYNSaG3GxOxYSMeUEZ8eQLd9KGGtdT+pXe2SOlL0VynqF4o1YTpp3y QY5WatAd7WuLx2iZvfQfjuW9VccOqC5HO8yQ2rq2P0qh8POYLnIjLP8EHU4RMMDMEm uk1Ek+31SV4i+Sow9IOk+7DfYcPwSzFDluMN+O5Y= Date: Wed, 30 Jun 2021 18:51:58 -0700 From: Andrew Morton To: akpm@linux-foundation.org, anshuman.khandual@arm.com, gerald.schaefer@linux.ibm.com, gor@linux.ibm.com, hca@linux.ibm.com, linux-mm@kvack.org, mingo@redhat.com, mm-commits@vger.kernel.org, tglx@linutronix.de, torvalds@linux-foundation.org Subject: [patch 090/192] mm/thp: make ARCH_ENABLE_SPLIT_PMD_PTLOCK dependent on PGTABLE_LEVELS > 2 Message-ID: <20210701015158.X1cghgNmq%akpm@linux-foundation.org> In-Reply-To: <20210630184624.9ca1937310b0dd5ce66b30e7@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 8A702400208A Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=yOisVyqC; spf=pass (imf18.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Stat-Signature: unatnqzrkrsudqidxggcx83qqa6drr19 X-HE-Tag: 1625104319-131548 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: From: Anshuman Khandual Subject: mm/thp: make ARCH_ENABLE_SPLIT_PMD_PTLOCK dependent on PGTABLE_LEVELS > 2 ARCH_ENABLE_SPLIT_PMD_PTLOCK is irrelevant unless there are more than two page table levels including PMD (also per Documentation/vm/split_page_table_lock.rst). Make this dependency explicit on remaining platforms i.e x86 and s390 where ARCH_ENABLE_SPLIT_PMD_PTLOCK is subscribed. Link: https://lkml.kernel.org/r/1622013501-20409-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual Acked-by: Gerald Schaefer # s390 Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Andrew Morton --- arch/s390/Kconfig | 2 +- arch/x86/Kconfig | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/s390/Kconfig~mm-thp-make-arch_enable_split_pmd_ptlock-dependent-on-pgtable_levels-2 +++ a/arch/s390/Kconfig @@ -62,7 +62,7 @@ config S390 select ARCH_BINFMT_ELF_STATE select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM select ARCH_ENABLE_MEMORY_HOTREMOVE - select ARCH_ENABLE_SPLIT_PMD_PTLOCK + select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2 select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DEBUG_WX select ARCH_HAS_DEVMEM_IS_ALLOWED --- a/arch/x86/Kconfig~mm-thp-make-arch_enable_split_pmd_ptlock-dependent-on-pgtable_levels-2 +++ a/arch/x86/Kconfig @@ -63,7 +63,7 @@ config X86 select ARCH_ENABLE_HUGEPAGE_MIGRATION if X86_64 && HUGETLB_PAGE && MIGRATION select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM) select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG - select ARCH_ENABLE_SPLIT_PMD_PTLOCK if X86_64 || X86_PAE + select ARCH_ENABLE_SPLIT_PMD_PTLOCK if (PGTABLE_LEVELS > 2) && (X86_64 || X86_PAE) select ARCH_ENABLE_THP_MIGRATION if X86_64 && TRANSPARENT_HUGEPAGE select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_CACHE_LINE_SIZE