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Wed, 14 Aug 2019 14:51:29 +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 3NFi6Z7pSKLw; Wed, 14 Aug 2019 14:51:29 +0200 (CEST) Received: from [172.25.230.101] (po15451.idsi0.si.c-s.fr [172.25.230.101]) by messagerie.si.c-s.fr (Postfix) with ESMTP id ADECA8B761; Wed, 14 Aug 2019 14:51:29 +0200 (CEST) Subject: Re: [PATCH 1/5] powerpc/ptdump: fix addresses display on PPC32 From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman References: Message-ID: Date: Wed, 14 Aug 2019 14:51:27 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: 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: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Michael, Le 14/08/2019 à 14:36, Christophe Leroy a écrit : > Commit 453d87f6a8ae ("powerpc/mm: Warn if W+X pages found on boot") > wrongly changed KERN_VIRT_START from 0 to PAGE_OFFSET, leading to a > shift in the displayed addresses. > > Lets revert that change to resync walk_pagetables()'s addr val and > pgd_t pointer for PPC32. > > Fixes: 453d87f6a8ae ("powerpc/mm: Warn if W+X pages found on boot") Either this patch or patch 2 of the series has to go into fixes. If you prefer next patch for fixes, then this one can be squashed into patch 3 which drops the PPC32 hacked definition of KERN_VIRT_START Christophe > Cc: stable@vger.kernel.org > Signed-off-by: Christophe Leroy > --- > arch/powerpc/mm/ptdump/ptdump.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c > index 6a88a9f585d4..3ad64fc11419 100644 > --- a/arch/powerpc/mm/ptdump/ptdump.c > +++ b/arch/powerpc/mm/ptdump/ptdump.c > @@ -27,7 +27,7 @@ > #include "ptdump.h" > > #ifdef CONFIG_PPC32 > -#define KERN_VIRT_START PAGE_OFFSET > +#define KERN_VIRT_START 0 > #endif > > /* >