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=-5.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS autolearn=ham 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 8B9A9C282C3 for ; Tue, 22 Jan 2019 14:30:25 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C289620854 for ; Tue, 22 Jan 2019 14:30:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="XieHotxU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C289620854 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43kW6Q45NKzDqNm for ; Wed, 23 Jan 2019 01:30:22 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=c-s.fr (client-ip=93.17.236.30; helo=pegase1.c-s.fr; envelope-from=christophe.leroy@c-s.fr; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=c-s.fr header.i=@c-s.fr header.b="XieHotxU"; dkim-atps=neutral Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43kW4g0XjCzDqF6 for ; Wed, 23 Jan 2019 01:28:51 +1100 (AEDT) Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 43kW4Z3L7pz9txqy; Tue, 22 Jan 2019 15:28:46 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=XieHotxU; 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 yAQHnjqpKivF; Tue, 22 Jan 2019 15:28:46 +0100 (CET) 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 43kW4Z1Rkfz9txqk; Tue, 22 Jan 2019 15:28:46 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1548167326; bh=y1h7NEIo+CtMklvBEgXPQBAxMK12PjZZsMrZCcoeYxU=; h=From:Subject:To:Cc:Date:From; b=XieHotxU2KZYSB97SDpVLpAMGYX785fb23S+hnGQ8Xp73oWgP+jL2CvjZ+YPLh7Rw qzZHpVtBWN/LROgH1zTl/2ZknH3skNEt4WJc0uZJUN3CHWqhUqDpM5/F8iCFoP0HkB S0THWNYWYUC5oq/SAHUHC4jm20f6uhS+Yc+Ip7Fg= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 940768B7E9; Tue, 22 Jan 2019 15:28:47 +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 Lx66DWK1ASNv; Tue, 22 Jan 2019 15:28:47 +0100 (CET) Received: from po16846vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 5E1C48B7CE; Tue, 22 Jan 2019 15:28:47 +0100 (CET) Received: by po16846vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 77C2E717D8; Tue, 22 Jan 2019 14:28:40 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v4 0/3] KASAN for powerpc/32 To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Nicholas Piggin , Aneesh Kumar K.V , Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Date: Tue, 22 Jan 2019 14:28:40 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This serie adds KASAN support to powerpc/32 Tested on nohash/32 (8xx) and book3s/32 (mpc832x ie 603) Changes in v4: - Comments from Andrey (DISABLE_BRANCH_PROFILING, Activation of reports) - Proper initialisation of shadow area in kasan_init() - Panic in case Hash table is required. - Added comments in patch one to explain why *t = *s becomes memcpy(t, s, ...) - Call of kasan_init_tags() Changes in v3: - Removed the printk() in kasan_early_init() to avoid build failure (see https://github.com/linuxppc/issues/issues/218) - Added necessary changes in asm/book3s/32/pgtable.h to get it work on powerpc 603 family - Added a few KASAN_SANITIZE_xxx.o := n to successfully boot on powerpc 603 family Changes in v2: - Rebased. - Using __set_pte_at() to build the early table. - Worked around and got rid of the patch adding asm/page.h in asm/pgtable-types.h ==> might be fixed independently but not needed for this serie. For book3s/32 (not 603), it cannot work as is because due to HASHPTE flag, we can't use the same pagetable for several PGD entries, and because Hash table management is not not active early enough at the time being. Christophe Leroy (3): powerpc/mm: prepare kernel for KAsan on PPC32 powerpc/32: Move early_init() in a separate file powerpc/32: Add KASAN support arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/book3s/32/pgtable.h | 2 + arch/powerpc/include/asm/kasan.h | 24 ++++++++ arch/powerpc/include/asm/nohash/32/pgtable.h | 2 + arch/powerpc/include/asm/ppc_asm.h | 5 ++ arch/powerpc/include/asm/setup.h | 5 ++ arch/powerpc/include/asm/string.h | 14 +++++ arch/powerpc/kernel/Makefile | 11 +++- arch/powerpc/kernel/cputable.c | 13 ++++- arch/powerpc/kernel/early_32.c | 36 ++++++++++++ arch/powerpc/kernel/prom_init_check.sh | 10 +++- arch/powerpc/kernel/setup-common.c | 2 + arch/powerpc/kernel/setup_32.c | 31 +--------- arch/powerpc/lib/Makefile | 8 +++ arch/powerpc/lib/copy_32.S | 9 ++- arch/powerpc/mm/Makefile | 3 + arch/powerpc/mm/dump_linuxpagetables.c | 8 +++ arch/powerpc/mm/kasan_init.c | 86 ++++++++++++++++++++++++++++ arch/powerpc/mm/mem.c | 4 ++ 19 files changed, 236 insertions(+), 38 deletions(-) create mode 100644 arch/powerpc/include/asm/kasan.h create mode 100644 arch/powerpc/kernel/early_32.c create mode 100644 arch/powerpc/mm/kasan_init.c -- 2.13.3