From patchwork Tue Dec 15 03:09:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11973825 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 14434C4361B for ; Tue, 15 Dec 2020 03:09:56 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 987E922BEF for ; Tue, 15 Dec 2020 03:09:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 987E922BEF 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 236F38D002A; Mon, 14 Dec 2020 22:09:55 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 1E5BC8D001C; Mon, 14 Dec 2020 22:09:55 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 123478D002A; Mon, 14 Dec 2020 22:09:55 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0250.hostedemail.com [216.40.44.250]) by kanga.kvack.org (Postfix) with ESMTP id EF5C38D001C for ; Mon, 14 Dec 2020 22:09:54 -0500 (EST) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id B8399181AEF30 for ; Tue, 15 Dec 2020 03:09:54 +0000 (UTC) X-FDA: 77594037108.10.dress32_360dca827420 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin10.hostedemail.com (Postfix) with ESMTP id 9AF7A16A4BC for ; Tue, 15 Dec 2020 03:09:54 +0000 (UTC) X-HE-Tag: dress32_360dca827420 X-Filterd-Recvd-Size: 3320 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Tue, 15 Dec 2020 03:09:54 +0000 (UTC) Date: Mon, 14 Dec 2020 19:09:51 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1608001793; bh=S5odxIyLrjuweyZ63+eQOrr1/g5wbASQHlAjaEWAX2g=; h=From:To:Subject:In-Reply-To:From; b=W2ct9UFM9MOi/tY+eY+vwwWHxkwaBgZHgn0hSe7cmBDBzDChXWGPmdfayBmaa8NHg 22x/8mQVsE8vfAZVcf+6ZtY3De28d9paZnU63kaJbGKInBEBlfdQ+NicGX2BeehAf7 LJzM3xvT00XpjUOjQlcHaPevYkgJiWxJdrvc139A= From: Andrew Morton To: adobriyan@gmail.com, akpm@linux-foundation.org, catalin.marinas@arm.com, corbet@lwn.net, geert@linux-m68k.org, gerg@linux-m68k.org, glaubitz@physik.fu-berlin.de, linux-mm@kvack.org, linux@armlinux.org.uk, mattst88@gmail.com, mm-commits@vger.kernel.org, mroos@linux.ee, rppt@linux.ibm.com, schmitzmic@gmail.com, tony.luck@intel.com, torvalds@linux-foundation.org, vgupta@synopsys.com, will@kernel.org Subject: [patch 112/200] ia64: make SPARSEMEM default and disable DISCONTIGMEM Message-ID: <20201215030951.N7nRi9IU0%akpm@linux-foundation.org> In-Reply-To: <20201214190237.a17b70ae14f129e2dca3d204@linux-foundation.org> User-Agent: s-nail v14.8.16 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: Mike Rapoport Subject: ia64: make SPARSEMEM default and disable DISCONTIGMEM SPARSEMEM memory model suitable for systems with large holes in their phyiscal memory layout. With SPARSEMEM_VMEMMAP enabled it provides pfn_to_page() and page_to_pfn() as fast as FLATMEM. Make it the default memory model for IA-64 and disable DISCONTIGMEM which is considered obsolete for quite some time. Link: https://lkml.kernel.org/r/20201101170454.9567-8-rppt@kernel.org Signed-off-by: Mike Rapoport Cc: Alexey Dobriyan Cc: Catalin Marinas Cc: Geert Uytterhoeven Cc: Greg Ungerer Cc: John Paul Adrian Glaubitz Cc: Jonathan Corbet Cc: Matt Turner Cc: Meelis Roos Cc: Michael Schmitz Cc: Russell King Cc: Tony Luck Cc: Vineet Gupta Cc: Will Deacon Signed-off-by: Andrew Morton --- arch/ia64/Kconfig | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/arch/ia64/Kconfig~ia64-make-sparsemem-default-and-disable-discontigmem +++ a/arch/ia64/Kconfig @@ -288,6 +288,7 @@ config ARCH_SELECT_MEMORY_MODEL config ARCH_DISCONTIGMEM_ENABLE def_bool y + depends on BROKEN help Say Y to support efficient handling of discontiguous physical memory, for architectures which are either NUMA (Non-Uniform Memory Access) @@ -299,12 +300,11 @@ config ARCH_FLATMEM_ENABLE config ARCH_SPARSEMEM_ENABLE def_bool y - depends on ARCH_DISCONTIGMEM_ENABLE select SPARSEMEM_VMEMMAP_ENABLE -config ARCH_DISCONTIGMEM_DEFAULT +config ARCH_SPARSEMEM_DEFAULT def_bool y - depends on ARCH_DISCONTIGMEM_ENABLE + depends on ARCH_SPARSEMEM_ENABLE config NUMA bool "NUMA support"