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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) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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(-)