From patchwork Mon Nov 22 08:48:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 12631443 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 1C717C433F5 for ; Mon, 22 Nov 2021 08:52:20 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 338756B007B; Mon, 22 Nov 2021 03:49:18 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2E8936B007D; Mon, 22 Nov 2021 03:49:18 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1B0486B007E; Mon, 22 Nov 2021 03:49:18 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0248.hostedemail.com [216.40.44.248]) by kanga.kvack.org (Postfix) with ESMTP id 0D5EE6B007B for ; Mon, 22 Nov 2021 03:49:18 -0500 (EST) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id CAC828248D52 for ; Mon, 22 Nov 2021 08:49:07 +0000 (UTC) X-FDA: 78835941534.04.5571DA3 Received: from pegase2.c-s.fr (pegase2.c-s.fr [93.17.235.10]) by imf08.hostedemail.com (Postfix) with ESMTP id DDDBB30000AD for ; Mon, 22 Nov 2021 08:49:03 +0000 (UTC) Received: from localhost (mailhub3.si.c-s.fr [172.26.127.67]) by localhost (Postfix) with ESMTP id 4HyLXk2FlWz9sSp; Mon, 22 Nov 2021 09:48:54 +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 qoLcZdD2JWwe; Mon, 22 Nov 2021 09:48:54 +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 4HyLXc1KF0z9sSn; Mon, 22 Nov 2021 09:48:48 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 17A948B776; Mon, 22 Nov 2021 09:48:48 +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 yLdfSD87LI3b; Mon, 22 Nov 2021 09:48:47 +0100 (CET) Received: from PO20335.IDSI0.si.c-s.fr (unknown [172.25.230.108]) by messagerie.si.c-s.fr (Postfix) with ESMTP id AFE978B77C; Mon, 22 Nov 2021 09:48:47 +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 1AM8mcwQ631708 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Mon, 22 Nov 2021 09:48:38 +0100 Received: (from chleroy@localhost) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.17.1/Submit) id 1AM8mbml631700; Mon, 22 Nov 2021 09:48:37 +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 0/8] Convert powerpc to default topdown mmap layout Date: Mon, 22 Nov 2021 09:48:20 +0100 Message-Id: X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1637570905; l=2539; s=20211009; h=from:subject:message-id; bh=BYMlT8t1rQmLJHB6M/rmi2Dhxo6sTBfS7n0H0F9IIs0=; b=sM1kxSuEvtE1c8++Tb4yJCAeefYfWUmMUwSUMkYK3TwR+ime9qoN4wEXWdeyeV2aJMfUeLAsATyu mHwFN+AMDa/KoznYAZXi6+EVieRUlxYmyJmsosWivRsw0FiMciUs X-Developer-Key: i=christophe.leroy@csgroup.eu; a=ed25519; pk=HIzTzUj91asvincQGOFx6+ZF5AoUuP9GdOtQChs7Mm0= X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: DDDBB30000AD X-Stat-Signature: zfzhupr8foshzjhoy8bpkfjfy3kcasfe Authentication-Results: imf08.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf08.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: 1637570943-608743 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. Christophe Leroy (8): powerpc/mm: Make slice specific to book3s/64 powerpc/mm: Remove CONFIG_PPC_MM_SLICES powerpc/mm: Remove asm/slice.h powerpc/mm: Move vma_mmu_pagesize() and hugetlb_get_unmapped_area() to slice.c 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 arch/Kconfig | 1 - arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/book3s/64/hash.h | 5 +- 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/mm/Makefile | 3 +- arch/powerpc/mm/book3s64/Makefile | 2 +- arch/powerpc/mm/book3s64/hash_utils.c | 14 -- arch/powerpc/mm/{ => book3s64}/slice.c | 144 ++++++++++- arch/powerpc/mm/hugetlbpage.c | 28 --- arch/powerpc/mm/mmap.c | 228 ------------------ arch/powerpc/mm/nohash/mmu_context.c | 2 - arch/powerpc/mm/nohash/tlb.c | 4 - arch/powerpc/platforms/Kconfig.cputype | 4 - fs/binfmt_elf.c | 3 +- include/linux/elf-randomize.h | 3 +- mm/util.c | 2 + 23 files changed, 165 insertions(+), 359 deletions(-) delete mode 100644 arch/powerpc/include/asm/slice.h rename arch/powerpc/mm/{ => book3s64}/slice.c (84%) delete mode 100644 arch/powerpc/mm/mmap.c