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=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 5BDACC2D0C0 for ; Sat, 21 Dec 2019 08:33:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 315F521655 for ; Sat, 21 Dec 2019 08:33:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="X/CC3zVj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726182AbfLUIcZ (ORCPT ); Sat, 21 Dec 2019 03:32:25 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:29373 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725845AbfLUIcZ (ORCPT ); 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Sat, 21 Dec 2019 09:32:22 +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 jxdAh1n2NAhk; Sat, 21 Dec 2019 09:32:21 +0100 (CET) Received: from localhost.localdomain (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id ACFFE8B752; Sat, 21 Dec 2019 09:32:21 +0100 (CET) Received: by localhost.localdomain (Postfix, from userid 0) id 4B883637B6; Sat, 21 Dec 2019 08:32:21 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v5 00/17] Enable CONFIG_VMAP_STACK on PPC32 To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , dja@axtens.net Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org Date: Sat, 21 Dec 2019 08:32:21 +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) v5: - Reduced ifdefs around tophys/tovirt by using macros (patch 5) - Reorganised stack overflow handling, making it independent of the existing one which could go away in another series (patch 7) - Added vmapped stacks for interrupts (new patch 8) Christophe Leroy (17): 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/32: Use vmapped stacks for interrupts 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: Enable CONFIG_VMAP_STACK 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 | 29 +++--- arch/powerpc/kernel/fpu.S | 3 + arch/powerpc/kernel/head_32.S | 61 ++++++----- arch/powerpc/kernel/head_32.h | 178 +++++++++++++++++++++++++++---- arch/powerpc/kernel/head_40x.S | 2 + arch/powerpc/kernel/head_8xx.S | 184 +++++++++++++++------------------ arch/powerpc/kernel/head_booke.h | 2 + arch/powerpc/kernel/head_fsl_booke.S | 1 + arch/powerpc/kernel/irq.c | 22 ++++ arch/powerpc/kernel/setup.h | 2 +- arch/powerpc/kernel/setup_32.c | 17 ++- arch/powerpc/kernel/setup_64.c | 2 +- arch/powerpc/kernel/traps.c | 9 ++ 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, 435 insertions(+), 182 deletions(-) -- 2.13.3