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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 99033C4740A for ; Tue, 10 Sep 2019 09:17:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6DD1E2168B for ; Tue, 10 Sep 2019 09:17:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="Uo7vBuqs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729657AbfIJJRQ (ORCPT ); Tue, 10 Sep 2019 05:17:16 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:54236 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726836AbfIJJRQ (ORCPT ); Tue, 10 Sep 2019 05:17:16 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 46SKDS719hz9txW0; Tue, 10 Sep 2019 11:17:12 +0200 (CEST) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=Uo7vBuqs; dkim-adsp=pass; dkim-atps=neutral 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 aiL9FREYs1Iv; Tue, 10 Sep 2019 11:17:12 +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 46SKDS5yLgz9txVx; Tue, 10 Sep 2019 11:17:12 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1568107032; bh=W7DK9fV7ou1Pj1g9DnumvyDlGuhYJdM1G0uUAoFgmVY=; h=From:Subject:To:Cc:Date:From; b=Uo7vBuqsQYCrMwrHXVGWzbOzqvISk+RBR+kV0zI1xyLyEpyh5cXME5zC/2O25DQqA puotdR6/Dn7foKcZ9Pd/6FHOUF/aAc5b8HUi0v5XMr1aeZw8w7cffZV/QoLBUgA7TS kRXPM+mpk8wzDRiGC/YuAvZQ08R+3NEgkmXVNilE= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 02D958B877; Tue, 10 Sep 2019 11:17:13 +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 Nni7Vn_UJZAF; Tue, 10 Sep 2019 11:17:12 +0200 (CEST) Received: from pc16032vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 8D2A58B885; Tue, 10 Sep 2019 11:16:19 +0200 (CEST) Received: by pc16032vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 16AA46B739; Tue, 10 Sep 2019 09:16:18 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v3 00/15] Enable CONFIG_VMAP_STACK on PPC32 To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , npiggin@gmail.com, dja@axtens.net Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org Date: Tue, 10 Sep 2019 09:16:18 +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 enable CONFIG_VMAP_STACK on PPC32. rfc v1: initial support on 8xx rfc v2: added stack overflow detection. v3: - Stack overflow detection works, tested with LKDTM STACK_EXHAUST test - Support for book3s32 added Christophe Leroy (15): powerpc/32: replace MTMSRD() by mtmsr powerpc/32: Add EXCEPTION_PROLOG_0 in head_32.h powerpc/32: save DEAR/DAR before calling handle_page_fault powerpc/32: move MSR_PR test into EXCEPTION_PROLOG_0 powerpc/32: add a macro to get and/or save DAR and DSISR on stack. powerpc/32: prepare for CONFIG_VMAP_STACK powerpc: align stack to 2 * THREAD_SIZE with VMAP_STACK powerpc/32: Add early stack overflow detection with VMAP stack. powerpc/8xx: Use alternative scratch registers in DTLB miss handler powerpc/8xx: drop exception entries for non-existing exceptions powerpc/8xx: move DataStoreTLBMiss perf handler powerpc/8xx: split breakpoint exception powerpc/8xx: Enable CONFIG_VMAP_STACK powerpc/32s: reorganise DSI handler. powerpc/32s: Activate CONFIG_VMAP_STACK arch/powerpc/include/asm/irq.h | 1 + arch/powerpc/include/asm/processor.h | 6 ++ arch/powerpc/include/asm/thread_info.h | 18 ++++ arch/powerpc/kernel/asm-offsets.c | 6 ++ arch/powerpc/kernel/entry_32.S | 55 ++++++++-- arch/powerpc/kernel/head_32.S | 57 ++++++---- arch/powerpc/kernel/head_32.h | 129 ++++++++++++++++++++--- arch/powerpc/kernel/head_40x.S | 2 + arch/powerpc/kernel/head_8xx.S | 186 +++++++++++++++------------------ arch/powerpc/kernel/head_booke.h | 2 + arch/powerpc/kernel/head_fsl_booke.S | 1 + arch/powerpc/kernel/irq.c | 1 + arch/powerpc/kernel/setup_32.c | 3 +- arch/powerpc/kernel/setup_64.c | 2 +- arch/powerpc/kernel/traps.c | 15 ++- arch/powerpc/kernel/vmlinux.lds.S | 2 +- arch/powerpc/mm/book3s32/hash_low.S | 46 +++++--- arch/powerpc/mm/book3s32/mmu.c | 9 +- arch/powerpc/perf/8xx-pmu.c | 12 ++- arch/powerpc/platforms/Kconfig.cputype | 3 + 20 files changed, 379 insertions(+), 177 deletions(-) -- 2.13.3