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 C367EC3A59F for ; Sat, 31 Aug 2019 10:18:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90FDC21670 for ; Sat, 31 Aug 2019 10:18:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="XcPoqKSs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727298AbfHaKS1 (ORCPT ); Sat, 31 Aug 2019 06:18:27 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:21120 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726296AbfHaKS1 (ORCPT ); Sat, 31 Aug 2019 06:18:27 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 46LC3h1mPdz9v4gN; Sat, 31 Aug 2019 12:18:24 +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=XcPoqKSs; 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 yCN6EBBjj26Z; Sat, 31 Aug 2019 12:18:24 +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 46LC3h0Ttpz9v4gL; Sat, 31 Aug 2019 12:18:24 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1567246704; bh=qFMzlyfxCodFSC4zHAOz2kDQ77ypyGQHTBxTejDX1bI=; h=From:Subject:To:Cc:Date:From; b=XcPoqKSsWPUOi2/+SwSxnbm73qCTTiXgUobkrwGvL7FHKduXJ5zNKAYV4Iq5g1pfI w/kTNtJGAOmRI3kLJ+tHVsu2DOAOldn+6zYmMbAT40yHcGwTPYCSY9afpvXAvq6nYq U3+BNQOwhYJ6mIMUb0To3O8ANNxbvwbwQUVl3ZGA= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 6828E8B7B9; Sat, 31 Aug 2019 12:18:25 +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 JaMaC9-f54tk; Sat, 31 Aug 2019 12:18:25 +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 33C698B789; Sat, 31 Aug 2019 12:18:25 +0200 (CEST) Received: by pc16032vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 551F06985C; Sat, 31 Aug 2019 10:18:23 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [RFC PATCH v2 00/10] 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 Date: Sat, 31 Aug 2019 10:18:23 +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. For the time being we have something working on 8xx. Further work I'm working on: - Fix stack overflow detection (doesn't work all the time yet, with the LKDTM STACK_EXHAUST test it hang). - Add support to powerpc 603 - Add support to all book3s32 v2: added stack overflow detection. Christophe Leroy (10): powerpc/32: replace MTMSRD() by mtmsr powerpc/32: Add EXCEPTION_PROLOG_0 in head_32.h powerpc/32: prepare for CONFIG_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: align stack to 2 * THREAD_SIZE with VMAP_STACK powerpc/32: Add stack overflow detection with VMAP stack. arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/processor.h | 5 ++ arch/powerpc/include/asm/thread_info.h | 18 ++++ arch/powerpc/kernel/asm-offsets.c | 5 ++ arch/powerpc/kernel/entry_32.S | 37 +++++++-- arch/powerpc/kernel/head_32.S | 4 +- arch/powerpc/kernel/head_32.h | 98 ++++++++++++++++++++-- arch/powerpc/kernel/head_8xx.S | 145 ++++++++++++++++++--------------- arch/powerpc/kernel/setup_32.c | 2 +- arch/powerpc/kernel/setup_64.c | 2 +- arch/powerpc/kernel/vmlinux.lds.S | 2 +- arch/powerpc/perf/8xx-pmu.c | 12 ++- 12 files changed, 240 insertions(+), 91 deletions(-) -- 2.13.3