From patchwork Thu Nov 25 08:23:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 12638655 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id A1AFCC433F5 for ; Thu, 25 Nov 2021 08:26:49 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E908B6B0080; Thu, 25 Nov 2021 03:24:15 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id E3FFD6B0081; Thu, 25 Nov 2021 03:24:15 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CE0736B0082; Thu, 25 Nov 2021 03:24:15 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0190.hostedemail.com [216.40.44.190]) by kanga.kvack.org (Postfix) with ESMTP id C1E2B6B0080 for ; Thu, 25 Nov 2021 03:24:15 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 8F62B8DC3D for ; Thu, 25 Nov 2021 08:24:05 +0000 (UTC) X-FDA: 78846764808.17.868CD49 Received: from pegase2.c-s.fr (pegase2.c-s.fr [93.17.235.10]) by imf15.hostedemail.com (Postfix) with ESMTP id 4426FD000081 for ; Thu, 25 Nov 2021 08:24:00 +0000 (UTC) Received: from localhost (mailhub3.si.c-s.fr [172.26.127.67]) by localhost (Postfix) with ESMTP id 4J09rT5YzZz9sSW; Thu, 25 Nov 2021 09:23:53 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase2.c-s.fr ([172.26.127.65]) by localhost (pegase2.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jZQ4In98YiGg; Thu, 25 Nov 2021 09:23:53 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase2.c-s.fr (Postfix) with ESMTP id 4J09rM5s9Mz9sSs; Thu, 25 Nov 2021 09:23:47 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id B8F358B763; Thu, 25 Nov 2021 09:23:47 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id xdzKrB0X8hTb; Thu, 25 Nov 2021 09:23:47 +0100 (CET) Received: from PO20335.IDSI0.si.c-s.fr (unknown [192.168.203.227]) by messagerie.si.c-s.fr (Postfix) with ESMTP id EC0918B77E; Thu, 25 Nov 2021 09:23:46 +0100 (CET) Received: from PO20335.IDSI0.si.c-s.fr (localhost [127.0.0.1]) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.16.1) with ESMTPS id 1AP8NbZm086344 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Thu, 25 Nov 2021 09:23:37 +0100 Received: (from chleroy@localhost) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.17.1/Submit) id 1AP8NZ8w086343; Thu, 25 Nov 2021 09:23:35 +0100 X-Authentication-Warning: PO20335.IDSI0.si.c-s.fr: chleroy set sender to christophe.leroy@csgroup.eu using -f From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , alex@ghiti.fr Cc: Christophe Leroy , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org Subject: [PATCH v2 0/9] Convert powerpc to default topdown mmap layout Date: Thu, 25 Nov 2021 09:23:22 +0100 Message-Id: X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1637828608; l=2768; s=20211009; h=from:subject:message-id; bh=Ne8VWHr7UfXdPKHcWWwHDV+u9sxnekcI1jHJ7Ct1EsI=; b=pRH9I5Vx22vrN4e7OT2gh7KvhlTErFlJbr+DAIOoR80mIkJ8i+7+aTY/xkWgRj8Qrf5F2xgDFUE8 ahXrLfCZBVNKu9evBfvVImY9xYLubuSrbwgE35F8/LfrbuNHsNKP X-Developer-Key: i=christophe.leroy@csgroup.eu; a=ed25519; pk=HIzTzUj91asvincQGOFx6+ZF5AoUuP9GdOtQChs7Mm0= X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 4426FD000081 X-Stat-Signature: xhwqhjnd6t41c9ybzxws1sjphtgtxxaj Authentication-Results: imf15.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf15.hostedemail.com: domain of christophe.leroy@csgroup.eu designates 93.17.235.10 as permitted sender) smtp.mailfrom=christophe.leroy@csgroup.eu X-HE-Tag: 1637828640-492154 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: This series converts powerpc to default topdown mmap layout. powerpc provides its own arch_get_unmapped_area() only when slices are needed, which is only for book3s/64. First part of the series moves slices into book3s/64 specific directories and cleans up other subarchitectures. Then a small modification is done to core mm to allow powerpc to still provide its own arch_randomize_brk() Last part converts to default topdown mmap layout. Changes in v2: - Moved patch 4 before patch 2 - Make generic arch_randomize_brk() __weak - Added patch 9 Christophe Leroy (9): powerpc/mm: Make slice specific to book3s/64 powerpc/mm: Move vma_mmu_pagesize() and hugetlb_get_unmapped_area() to slice.c powerpc/mm: Remove CONFIG_PPC_MM_SLICES powerpc/mm: Remove asm/slice.h powerpc/mm: Call radix__arch_get_unmapped_area() from arch_get_unmapped_area() mm: Allow arch specific arch_randomize_brk() with CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT powerpc/mm: Convert to default topdown mmap layout powerpc/mm: Properly randomise mmap with slices powerpc: Simplify and move arch_randomize_brk() arch/powerpc/Kconfig | 2 +- arch/powerpc/include/asm/book3s/64/hash.h | 5 +- arch/powerpc/include/asm/book3s/64/hugetlb.h | 4 - arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 + arch/powerpc/include/asm/book3s/64/slice.h | 18 ++ arch/powerpc/include/asm/hugetlb.h | 2 +- arch/powerpc/include/asm/paca.h | 5 - arch/powerpc/include/asm/page.h | 1 - arch/powerpc/include/asm/processor.h | 2 - arch/powerpc/include/asm/slice.h | 46 ---- arch/powerpc/kernel/paca.c | 5 - arch/powerpc/kernel/process.c | 40 --- arch/powerpc/mm/Makefile | 3 +- arch/powerpc/mm/book3s64/Makefile | 2 +- arch/powerpc/mm/book3s64/hash_utils.c | 32 +-- arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 55 ----- arch/powerpc/mm/{ => book3s64}/slice.c | 200 ++++++++++++++- arch/powerpc/mm/hugetlbpage.c | 28 --- arch/powerpc/mm/mmap.c | 228 ------------------ arch/powerpc/mm/nohash/mmu_context.c | 9 - arch/powerpc/mm/nohash/tlb.c | 4 - arch/powerpc/platforms/Kconfig.cputype | 4 - include/linux/sizes.h | 2 + mm/util.c | 2 +- 24 files changed, 234 insertions(+), 466 deletions(-) delete mode 100644 arch/powerpc/include/asm/slice.h rename arch/powerpc/mm/{ => book3s64}/slice.c (80%) delete mode 100644 arch/powerpc/mm/mmap.c