From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 B5EE7C4346E for ; Sun, 27 Sep 2020 09:16:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6C6092389F for ; Sun, 27 Sep 2020 09:16:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726327AbgI0JQV (ORCPT ); Sun, 27 Sep 2020 05:16:21 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:39537 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726185AbgI0JQV (ORCPT ); Sun, 27 Sep 2020 05:16:21 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 4Bzg4Y1mbTz9vCxx; Sun, 27 Sep 2020 11:16:13 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id U2cG5DDVaODT; Sun, 27 Sep 2020 11:16:13 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4Bzg4Y10LJz9vCxw; Sun, 27 Sep 2020 11:16:13 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id A1D118B771; Sun, 27 Sep 2020 11:16:17 +0200 (CEST) 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 aMYHOO3LHzx1; Sun, 27 Sep 2020 11:16:17 +0200 (CEST) Received: from po17688vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 4F3DE8B75B; Sun, 27 Sep 2020 11:16:17 +0200 (CEST) Received: by po17688vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 1D5FA65DE8; Sun, 27 Sep 2020 09:16:16 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v1 00/30] Modernise VDSO setup To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Sun, 27 Sep 2020 09:16:16 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series modernises the setup of VDSO: - Switch to using _install_special_mapping() which has replaced install_special_mapping() - Move datapage in front of text like most other architectures to simplify its localisation - Perform link time symbol resolution instead of runtime This leads to a huge size reduction of vdso.c Replaces the two following series: [v1,1/9] powerpc/vdso: Remove BUG_ON() in vdso_init() [v2,1/5] powerpc/vdso: Remove DBG() This series is based on top of the series to the C generic VDSO. It is functionnaly independant but some trivial merge conflict occurs in some files. I may rebase it on top of merge if the C generic VDSO series cannot be merged soon. Christophe Leroy (30): powerpc/vdso: Stripped VDSO is not needed, don't build it powerpc/vdso: Add missing includes and clean vdso_setup_syscall_map() powerpc/vdso: Rename syscall_map_32/64 to simplify vdso_setup_syscall_map() powerpc/vdso: Remove get_page() in vdso_pagelist initialization powerpc/vdso: Remove NULL termination element in vdso_pagelist powerpc/vdso: Refactor 32 bits and 64 bits pages setup powerpc/vdso: Remove unnecessary ifdefs in vdso_pagelist initialization powerpc/vdso: Use VDSO size in arch_setup_additional_pages() powerpc/vdso: Simplify arch_setup_additional_pages() exit powerpc/vdso: Move to _install_special_mapping() and remove arch_vma_name() powerpc/vdso: Provide vdso_remap() powerpc/vdso: Replace vdso_base by vdso powerpc/vdso: Move vdso datapage up front powerpc/vdso: Simplify __get_datapage() powerpc/vdso: Remove unused \tmp param in __get_datapage() powerpc/vdso: Retrieve sigtramp offsets at buildtime powerpc/vdso: Use builtin symbols to locate fixup section powerpc/vdso: Merge __kernel_sync_dicache_p5() into __kernel_sync_dicache() powerpc/vdso: Remove vdso32_pages and vdso64_pages powerpc/vdso: Remove __kernel_datapage_offset powerpc/vdso: Remove runtime generated sigtramp offsets powerpc/vdso: Remove vdso_patches[] and associated functions powerpc/vdso: Remove unused text member in struct lib32/64_elfinfo powerpc/vdso: Remove symbol section information in struct lib32/64_elfinfo powerpc/vdso: Remove lib32_elfinfo and lib64_elfinfo powerpc/vdso: Remove vdso_setup() powerpc/vdso: Remove vdso_ready powerpc/vdso: Remove DBG() powerpc/vdso: Remove VDSO32_LBASE and VDSO64_LBASE powerpc/vdso: Cleanup vdso.h arch/powerpc/Makefile | 24 +- arch/powerpc/include/asm/book3s/32/mmu-hash.h | 2 +- arch/powerpc/include/asm/book3s/64/mmu.h | 2 +- arch/powerpc/include/asm/elf.h | 2 +- arch/powerpc/include/asm/mm-arch-hooks.h | 25 - arch/powerpc/include/asm/mmu_context.h | 6 +- arch/powerpc/include/asm/nohash/32/mmu-40x.h | 2 +- arch/powerpc/include/asm/nohash/32/mmu-44x.h | 2 +- arch/powerpc/include/asm/nohash/32/mmu-8xx.h | 2 +- arch/powerpc/include/asm/nohash/mmu-book3e.h | 2 +- arch/powerpc/include/asm/vdso.h | 29 +- arch/powerpc/include/asm/vdso/gettimeofday.h | 4 +- arch/powerpc/include/asm/vdso_datapage.h | 17 +- arch/powerpc/kernel/asm-offsets.c | 6 +- arch/powerpc/kernel/signal_32.c | 8 +- arch/powerpc/kernel/signal_64.c | 4 +- arch/powerpc/kernel/vdso.c | 682 +++--------------- arch/powerpc/kernel/vdso32/Makefile | 27 +- arch/powerpc/kernel/vdso32/cacheflush.S | 19 +- arch/powerpc/kernel/vdso32/datapage.S | 7 +- .../powerpc/kernel/vdso32/gen_vdso_offsets.sh | 16 + arch/powerpc/kernel/vdso32/vdso32.lds.S | 24 +- arch/powerpc/kernel/vdso64/Makefile | 25 +- arch/powerpc/kernel/vdso64/cacheflush.S | 18 +- arch/powerpc/kernel/vdso64/datapage.S | 7 +- .../powerpc/kernel/vdso64/gen_vdso_offsets.sh | 16 + arch/powerpc/kernel/vdso64/vdso64.lds.S | 23 +- arch/powerpc/perf/callchain_32.c | 8 +- arch/powerpc/perf/callchain_64.c | 4 +- 29 files changed, 267 insertions(+), 746 deletions(-) delete mode 100644 arch/powerpc/include/asm/mm-arch-hooks.h create mode 100755 arch/powerpc/kernel/vdso32/gen_vdso_offsets.sh create mode 100755 arch/powerpc/kernel/vdso64/gen_vdso_offsets.sh -- 2.25.0