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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 49CC9C3F2CD for ; Wed, 4 Mar 2020 06:49:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1FBB82146E for ; Wed, 4 Mar 2020 06:49:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="TjnV6xMQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387553AbgCDGtF (ORCPT ); Wed, 4 Mar 2020 01:49:05 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:7396 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725283AbgCDGtF (ORCPT ); Wed, 4 Mar 2020 01:49:05 -0500 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 48XPcF5vVkz9v0st; Wed, 4 Mar 2020 07:49:01 +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=TjnV6xMQ; 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 dW39OVxTZgd8; Wed, 4 Mar 2020 07:49:01 +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 48XPcF4ZcKz9v0ss; Wed, 4 Mar 2020 07:49:01 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1583304541; bh=wrQNL9rvesEDlWoNS4tGcfPvGhYnLZNAbgZHq9fGbnE=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=TjnV6xMQKz2IO1bGDE4HAZJMFDjYTtnjTtNNjZEsh1GJH/DNUiegOPbfzQzRdUJdq mfbcsqR6vxFcKaMgtar20QBjEJl5cDZGZqEWM5VabMwt/qfmG0b/5ARzKJJU0pQlpP HX98Thi1AQonukArlC4ShOrxhDCLgoABIqbXgKFo= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 784788B826; Wed, 4 Mar 2020 07:49:02 +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 oPUcSMTN_Vcy; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Received: from [172.25.230.100] (po15451.idsi0.si.c-s.fr [172.25.230.100]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 2A1098B820; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Subject: Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers To: Qian Cai , Anshuman Khandual Cc: Linux Memory Management List , Andrew Morton , Mike Rapoport , Vineet Gupta , Catalin Marinas , Will Deacon , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "Kirill A . Shutemov" , Paul Walmsley , Palmer Dabbelt , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev , linux-s390@vger.kernel.org, linux-riscv@lists.infradead.org, the arch/x86 maintainers , linux-arch@vger.kernel.org, LKML , "Aneesh Kumar K.V" References: <1581909460-19148-1-git-send-email-anshuman.khandual@arm.com> <1582726182.7365.123.camel@lca.pw> <7c707b7f-ce3d-993b-8042-44fdc1ed28bf@c-s.fr> <1582732318.7365.129.camel@lca.pw> <1583178042.7365.146.camel@lca.pw> <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> From: Christophe Leroy Message-ID: Date: Wed, 4 Mar 2020 07:48:54 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 04/03/2020 à 02:39, Qian Cai a écrit : > >> Below is slightly modified version of your change above and should still >> prevent the bug on powerpc. Will it be possible for you to re-test this >> ? Once confirmed, will send a patch enabling this test on powerpc64 >> keeping your authorship. Thank you. > > This works fine on radix MMU but I decided to go a bit future to test hash > MMU. The kernel will stuck here below. I did confirm that pte_alloc_map_lock() > was successful, so I don’t understand hash MMU well enough to tell why > it could still take an interrupt at pte_clear_tests() even before we calls > pte_unmap_unlock()? AFAIU, you are not taking an interrupt here. You are stuck in the pte_update(), most likely due to nested locks. Try with LOCKDEP ? Christophe > > [ 33.881515][ T1] ok 8 - property-entry > [ 33.883653][ T1] debug_vm_pgtable: debug_vm_pgtable: Validating > architecture page table helpers > [ 60.418885][ C8] watchdog: BUG: soft lockup - CPU#8 stuck for 23s! > [swapper/0:1] From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christophe Leroy Subject: Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers Date: Wed, 4 Mar 2020 07:48:54 +0100 Message-ID: References: <1581909460-19148-1-git-send-email-anshuman.khandual@arm.com> <1582726182.7365.123.camel@lca.pw> <7c707b7f-ce3d-993b-8042-44fdc1ed28bf@c-s.fr> <1582732318.7365.129.camel@lca.pw> <1583178042.7365.146.camel@lca.pw> <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Return-path: Received: from pegase1.c-s.fr ([93.17.236.30]:7396 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725283AbgCDGtF (ORCPT ); Wed, 4 Mar 2020 01:49:05 -0500 In-Reply-To: <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> Content-Language: fr Sender: linux-arch-owner@vger.kernel.org List-ID: To: Qian Cai , Anshuman Khandual Cc: Linux Memory Management List , Andrew Morton , Mike Rapoport , Vineet Gupta , Catalin Marinas , Will Deacon , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "Kirill A . Shutemov" , Paul Walmsley , Palmer Dabbelt Le 04/03/2020 à 02:39, Qian Cai a écrit : > >> Below is slightly modified version of your change above and should still >> prevent the bug on powerpc. Will it be possible for you to re-test this >> ? Once confirmed, will send a patch enabling this test on powerpc64 >> keeping your authorship. Thank you. > > This works fine on radix MMU but I decided to go a bit future to test hash > MMU. The kernel will stuck here below. I did confirm that pte_alloc_map_lock() > was successful, so I don’t understand hash MMU well enough to tell why > it could still take an interrupt at pte_clear_tests() even before we calls > pte_unmap_unlock()? AFAIU, you are not taking an interrupt here. You are stuck in the pte_update(), most likely due to nested locks. Try with LOCKDEP ? Christophe > > [ 33.881515][ T1] ok 8 - property-entry > [ 33.883653][ T1] debug_vm_pgtable: debug_vm_pgtable: Validating > architecture page table helpers > [ 60.418885][ C8] watchdog: BUG: soft lockup - CPU#8 stuck for 23s! > [swapper/0:1] 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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 B4DA7C3F2D1 for ; Wed, 4 Mar 2020 06:49:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 7351F2146E for ; 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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 dW39OVxTZgd8; Wed, 4 Mar 2020 07:49:01 +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 48XPcF4ZcKz9v0ss; Wed, 4 Mar 2020 07:49:01 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1583304541; bh=wrQNL9rvesEDlWoNS4tGcfPvGhYnLZNAbgZHq9fGbnE=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=TjnV6xMQKz2IO1bGDE4HAZJMFDjYTtnjTtNNjZEsh1GJH/DNUiegOPbfzQzRdUJdq mfbcsqR6vxFcKaMgtar20QBjEJl5cDZGZqEWM5VabMwt/qfmG0b/5ARzKJJU0pQlpP HX98Thi1AQonukArlC4ShOrxhDCLgoABIqbXgKFo= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 784788B826; Wed, 4 Mar 2020 07:49:02 +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 oPUcSMTN_Vcy; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Received: from [172.25.230.100] (po15451.idsi0.si.c-s.fr [172.25.230.100]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 2A1098B820; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Subject: Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers To: Qian Cai , Anshuman Khandual References: <1581909460-19148-1-git-send-email-anshuman.khandual@arm.com> <1582726182.7365.123.camel@lca.pw> <7c707b7f-ce3d-993b-8042-44fdc1ed28bf@c-s.fr> <1582732318.7365.129.camel@lca.pw> <1583178042.7365.146.camel@lca.pw> <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> From: Christophe Leroy Message-ID: Date: Wed, 4 Mar 2020 07:48:54 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200303_224908_201407_50865962 X-CRM114-Status: GOOD ( 11.45 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Benjamin Herrenschmidt , Heiko Carstens , Linux Memory Management List , Paul Mackerras , "H. Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Michael Ellerman , the arch/x86 maintainers , Mike Rapoport , Christian Borntraeger , Ingo Molnar , Catalin Marinas , linux-snps-arc@lists.infradead.org, Vasily Gorbik , Borislav Petkov , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Vineet Gupta , LKML , Palmer Dabbelt , "Aneesh Kumar K.V" , Andrew Morton , linuxppc-dev Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org Le 04/03/2020 à 02:39, Qian Cai a écrit : > >> Below is slightly modified version of your change above and should still >> prevent the bug on powerpc. Will it be possible for you to re-test this >> ? Once confirmed, will send a patch enabling this test on powerpc64 >> keeping your authorship. Thank you. > > This works fine on radix MMU but I decided to go a bit future to test hash > MMU. The kernel will stuck here below. I did confirm that pte_alloc_map_lock() > was successful, so I don’t understand hash MMU well enough to tell why > it could still take an interrupt at pte_clear_tests() even before we calls > pte_unmap_unlock()? AFAIU, you are not taking an interrupt here. You are stuck in the pte_update(), most likely due to nested locks. Try with LOCKDEP ? Christophe > > [ 33.881515][ T1] ok 8 - property-entry > [ 33.883653][ T1] debug_vm_pgtable: debug_vm_pgtable: Validating > architecture page table helpers > [ 60.418885][ C8] watchdog: BUG: soft lockup - CPU#8 stuck for 23s! > [swapper/0:1] 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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 CAB3FC3F2D1 for ; Wed, 4 Mar 2020 06:51:17 +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 F2CB12146E for ; 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Wed, 4 Mar 2020 07:49:01 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1583304541; bh=wrQNL9rvesEDlWoNS4tGcfPvGhYnLZNAbgZHq9fGbnE=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=TjnV6xMQKz2IO1bGDE4HAZJMFDjYTtnjTtNNjZEsh1GJH/DNUiegOPbfzQzRdUJdq mfbcsqR6vxFcKaMgtar20QBjEJl5cDZGZqEWM5VabMwt/qfmG0b/5ARzKJJU0pQlpP HX98Thi1AQonukArlC4ShOrxhDCLgoABIqbXgKFo= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 784788B826; Wed, 4 Mar 2020 07:49:02 +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 oPUcSMTN_Vcy; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Received: from [172.25.230.100] (po15451.idsi0.si.c-s.fr [172.25.230.100]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 2A1098B820; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Subject: Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers To: Qian Cai , Anshuman Khandual References: <1581909460-19148-1-git-send-email-anshuman.khandual@arm.com> <1582726182.7365.123.camel@lca.pw> <7c707b7f-ce3d-993b-8042-44fdc1ed28bf@c-s.fr> <1582732318.7365.129.camel@lca.pw> <1583178042.7365.146.camel@lca.pw> <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> From: Christophe Leroy Message-ID: Date: Wed, 4 Mar 2020 07:48:54 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit 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: Heiko Carstens , Linux Memory Management List , Paul Mackerras , "H. Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, the arch/x86 maintainers , Mike Rapoport , Christian Borntraeger , Ingo Molnar , Catalin Marinas , linux-snps-arc@lists.infradead.org, Vasily Gorbik , Borislav Petkov , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Vineet Gupta , LKML , Palmer Dabbelt , "Aneesh Kumar K.V" , Andrew Morton , linuxppc-dev Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Le 04/03/2020 à 02:39, Qian Cai a écrit : > >> Below is slightly modified version of your change above and should still >> prevent the bug on powerpc. Will it be possible for you to re-test this >> ? Once confirmed, will send a patch enabling this test on powerpc64 >> keeping your authorship. Thank you. > > This works fine on radix MMU but I decided to go a bit future to test hash > MMU. The kernel will stuck here below. I did confirm that pte_alloc_map_lock() > was successful, so I don’t understand hash MMU well enough to tell why > it could still take an interrupt at pte_clear_tests() even before we calls > pte_unmap_unlock()? AFAIU, you are not taking an interrupt here. You are stuck in the pte_update(), most likely due to nested locks. Try with LOCKDEP ? Christophe > > [ 33.881515][ T1] ok 8 - property-entry > [ 33.883653][ T1] debug_vm_pgtable: debug_vm_pgtable: Validating > architecture page table helpers > [ 60.418885][ C8] watchdog: BUG: soft lockup - CPU#8 stuck for 23s! > [swapper/0:1] 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=-2.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 A053EC3F2CD for ; Wed, 4 Mar 2020 06:49:24 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 765222146E for ; 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Wed, 4 Mar 2020 07:49:02 +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 oPUcSMTN_Vcy; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Received: from [172.25.230.100] (po15451.idsi0.si.c-s.fr [172.25.230.100]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 2A1098B820; Wed, 4 Mar 2020 07:49:02 +0100 (CET) Subject: Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers To: Qian Cai , Anshuman Khandual References: <1581909460-19148-1-git-send-email-anshuman.khandual@arm.com> <1582726182.7365.123.camel@lca.pw> <7c707b7f-ce3d-993b-8042-44fdc1ed28bf@c-s.fr> <1582732318.7365.129.camel@lca.pw> <1583178042.7365.146.camel@lca.pw> <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> From: Christophe Leroy Message-ID: Date: Wed, 4 Mar 2020 07:48:54 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <12260F9A-695D-40F8-932F-61D86D77D441@lca.pw> Content-Language: fr X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200303_224908_201407_50865962 X-CRM114-Status: GOOD ( 11.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Benjamin Herrenschmidt , Heiko Carstens , Linux Memory Management List , Paul Mackerras , "H. Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Michael Ellerman , the arch/x86 maintainers , Mike Rapoport , Christian Borntraeger , Ingo Molnar , Catalin Marinas , linux-snps-arc@lists.infradead.org, Vasily Gorbik , Borislav Petkov , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Vineet Gupta , LKML , Palmer Dabbelt , "Aneesh Kumar K.V" , Andrew Morton , linuxppc-dev Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org CgpMZSAwNC8wMy8yMDIwIMOgIDAyOjM5LCBRaWFuIENhaSBhIMOpY3JpdMKgOgo+IAo+PiBCZWxv dyBpcyBzbGlnaHRseSBtb2RpZmllZCB2ZXJzaW9uIG9mIHlvdXIgY2hhbmdlIGFib3ZlIGFuZCBz aG91bGQgc3RpbGwKPj4gcHJldmVudCB0aGUgYnVnIG9uIHBvd2VycGMuIFdpbGwgaXQgYmUgcG9z c2libGUgZm9yIHlvdSB0byByZS10ZXN0IHRoaXMKPj4gPyBPbmNlIGNvbmZpcm1lZCwgd2lsbCBz ZW5kIGEgcGF0Y2ggZW5hYmxpbmcgdGhpcyB0ZXN0IG9uIHBvd2VycGM2NAo+PiBrZWVwaW5nIHlv dXIgYXV0aG9yc2hpcC4gVGhhbmsgeW91Lgo+IAo+IFRoaXMgd29ya3MgZmluZSBvbiByYWRpeCBN TVUgYnV0IEkgZGVjaWRlZCB0byBnbyBhIGJpdCBmdXR1cmUgdG8gdGVzdCBoYXNoCj4gTU1VLiBU aGUga2VybmVsIHdpbGwgc3R1Y2sgaGVyZSBiZWxvdy4gSSBkaWQgY29uZmlybSB0aGF0IHB0ZV9h bGxvY19tYXBfbG9jaygpCj4gd2FzIHN1Y2Nlc3NmdWwsIHNvIEkgZG9u4oCZdCB1bmRlcnN0YW5k IGhhc2ggTU1VIHdlbGwgZW5vdWdoIHRvIHRlbGwgd2h5Cj4gaXQgY291bGQgc3RpbGwgdGFrZSBh biBpbnRlcnJ1cHQgYXQgcHRlX2NsZWFyX3Rlc3RzKCkgZXZlbiBiZWZvcmUgd2UgY2FsbHMKPiBw dGVfdW5tYXBfdW5sb2NrKCk/CgpBRkFJVSwgeW91IGFyZSBub3QgdGFraW5nIGFuIGludGVycnVw dCBoZXJlLiBZb3UgYXJlIHN0dWNrIGluIHRoZSAKcHRlX3VwZGF0ZSgpLCBtb3N0IGxpa2VseSBk dWUgdG8gbmVzdGVkIGxvY2tzLiBUcnkgd2l0aCBMT0NLREVQID8KCkNocmlzdG9waGUKCj4gCj4g WyAgIDMzLjg4MTUxNV1bICAgIFQxXSBvayA4IC0gcHJvcGVydHktZW50cnkKPiBbICAgMzMuODgz NjUzXVsgICAgVDFdIGRlYnVnX3ZtX3BndGFibGU6IGRlYnVnX3ZtX3BndGFibGU6IFZhbGlkYXRp bmcKPiBhcmNoaXRlY3R1cmUgcGFnZSB0YWJsZSBoZWxwZXJzCj4gWyAgIDYwLjQxODg4NV1bICAg IEM4XSB3YXRjaGRvZzogQlVHOiBzb2Z0IGxvY2t1cCAtIENQVSM4IHN0dWNrIGZvciAyM3MhCj4g W3N3YXBwZXIvMDoxXQoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlz dHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3Rp bmZvL2xpbnV4LWFybS1rZXJuZWwK