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=-0.9 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 971FFC432C0 for ; Tue, 26 Nov 2019 12:36:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 60663206BF for ; Tue, 26 Nov 2019 12:36:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="oKWo+zQq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728406AbfKZMgG (ORCPT ); Tue, 26 Nov 2019 07:36:06 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:14535 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727408AbfKZMgG (ORCPT ); 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Tue, 26 Nov 2019 13:36:04 +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 kfd4sNZgw0Et; Tue, 26 Nov 2019 13:36:03 +0100 (CET) Received: from po16098vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id BC4D18B771; Tue, 26 Nov 2019 13:36:03 +0100 (CET) Received: by po16098vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 535F56B76A; Tue, 26 Nov 2019 12:36:03 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v4 00/16] Enable CONFIG_VMAP_STACK on PPC32 To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org Date: Tue, 26 Nov 2019 12:36:03 +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 v4: - Fixed build failure with CONFIG_KVM (patch 14) - Fixed boot failure with pmac32_defconfig+VMAP_STACK+KVM (new patch 15) - Fixed crash with altivec and fpu (patch 16) Christophe Leroy (16): 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: avoid crossing page boundary while changing SRR0/1. 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/fpu.S | 3 + arch/powerpc/kernel/head_32.S | 65 ++++++++---- 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/vector.S | 3 + 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 + 22 files changed, 393 insertions(+), 177 deletions(-) -- 2.13.3