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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 65571C433F4 for ; Mon, 24 Sep 2018 15:55:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2B7A920883 for ; Mon, 24 Sep 2018 15:55:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2B7A920883 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728954AbeIXV6L (ORCPT ); Mon, 24 Sep 2018 17:58:11 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:14711 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731043AbeIXV6J (ORCPT ); Mon, 24 Sep 2018 17:58:09 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 42Jpgp0l7Wz9ttS5; Mon, 24 Sep 2018 17:55:18 +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 C6pD0fhvaDNm; Mon, 24 Sep 2018 17:55:18 +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 42Jpgp07czz9ttRt; Mon, 24 Sep 2018 17:55:18 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id EC38E8B7B7; Mon, 24 Sep 2018 17:55:16 +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 1zuCRUvfC32J; Mon, 24 Sep 2018 17:55:16 +0200 (CEST) Received: from PO15451.localdomain (po15451.idsi0.si.c-s.fr [172.25.231.3]) by messagerie.si.c-s.fr (Postfix) with ESMTP id A45538B7B8; Mon, 24 Sep 2018 17:55:15 +0200 (CEST) Received: by pc16082vm.idsi0.si.c-s.fr (Postfix, from userid 0) id A1CEF70AD3; Mon, 24 Sep 2018 15:52:19 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [RFC PATCH v1 0/9] powerpc: Switch to CONFIG_THREAD_INFO_IN_TASK To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , aneesh.kumar@linux.vnet.ibm.com, npiggin@gmail.com Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Mon, 24 Sep 2018 15:52:19 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The purpose of this serie is to activate CONFIG_THREAD_INFO_IN_TASK which moves the thread_info into task_struct. Moving thread_info into task_struct has the following advantages: - It protects thread_info from corruption in the case of stack overflows. - Its address is harder to determine if stack addresses are leaked, making a number of attacks more difficult. Christophe Leroy (9): timer: fix circular header dependency book3s/64: avoid circular header inclusion in mmu-hash.h powerpc: change name THREAD_INFO to TASK_STACK powerpc: Prepare for moving thread_info into task_struct powerpc: Activate CONFIG_THREAD_INFO_IN_TASK powerpc: regain entire stack space powerpc: 'current_set' is now a table of task_struct pointers powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU powerpc/64: Modify CURRENT_THREAD_INFO() arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/asm-prototypes.h | 4 +- arch/powerpc/include/asm/book3s/64/mmu-hash.h | 2 +- arch/powerpc/include/asm/exception-64s.h | 4 +- arch/powerpc/include/asm/irq.h | 14 +++--- arch/powerpc/include/asm/livepatch.h | 2 +- arch/powerpc/include/asm/processor.h | 39 ++------------- arch/powerpc/include/asm/ptrace.h | 2 +- arch/powerpc/include/asm/reg.h | 2 +- arch/powerpc/include/asm/smp.h | 3 +- arch/powerpc/include/asm/task_size.h | 42 ++++++++++++++++ arch/powerpc/include/asm/thread_info.h | 17 +------ arch/powerpc/kernel/asm-offsets.c | 8 ++-- arch/powerpc/kernel/entry_32.S | 66 +++++++++----------------- arch/powerpc/kernel/entry_64.S | 12 ++--- arch/powerpc/kernel/epapr_hcalls.S | 5 +- arch/powerpc/kernel/exceptions-64e.S | 13 +---- arch/powerpc/kernel/exceptions-64s.S | 2 +- arch/powerpc/kernel/head_32.S | 14 +++--- arch/powerpc/kernel/head_40x.S | 4 +- arch/powerpc/kernel/head_44x.S | 8 ++-- arch/powerpc/kernel/head_64.S | 1 + arch/powerpc/kernel/head_8xx.S | 2 +- arch/powerpc/kernel/head_booke.h | 12 ++--- arch/powerpc/kernel/head_fsl_booke.S | 16 +++---- arch/powerpc/kernel/idle_6xx.S | 8 ++-- arch/powerpc/kernel/idle_book3e.S | 2 +- arch/powerpc/kernel/idle_e500.S | 8 ++-- arch/powerpc/kernel/idle_power4.S | 2 +- arch/powerpc/kernel/irq.c | 66 ++++---------------------- arch/powerpc/kernel/kgdb.c | 28 ----------- arch/powerpc/kernel/machine_kexec_64.c | 6 +-- arch/powerpc/kernel/misc_32.S | 17 +++---- arch/powerpc/kernel/process.c | 15 +++--- arch/powerpc/kernel/setup-common.c | 2 +- arch/powerpc/kernel/setup_32.c | 15 ++---- arch/powerpc/kernel/setup_64.c | 29 ++--------- arch/powerpc/kernel/smp.c | 16 +++---- arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 6 +-- arch/powerpc/kvm/book3s_hv_hmi.c | 1 + arch/powerpc/mm/hash_low_32.S | 14 ++---- arch/powerpc/sysdev/6xx-suspend.S | 5 +- arch/powerpc/xmon/xmon.c | 2 +- fs/timerfd.c | 2 +- kernel/time/alarmtimer.c | 2 +- 45 files changed, 194 insertions(+), 347 deletions(-) create mode 100644 arch/powerpc/include/asm/task_size.h -- 2.13.3