From nobody Fri Oct 24 20:31:40 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DC18C00140 for ; Mon, 15 Aug 2022 20:24:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347307AbiHOUYu (ORCPT ); Mon, 15 Aug 2022 16:24:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346975AbiHOUQh (ORCPT ); Mon, 15 Aug 2022 16:16:37 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F7C996740; Mon, 15 Aug 2022 12:00:04 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 894D4B810A1; Mon, 15 Aug 2022 19:00:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99F3BC433C1; Mon, 15 Aug 2022 19:00:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660590001; bh=3C0nmz2bwUw/YhMXl/4vqecM80SkN232zvqvmAcwXbw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IOd+G3luXMEBFXJ8K6iKlUb42v+B4AkADjdBqZtsAb0fPetkraMIPHJCuetAjGv44 CsoZUZrISIa5Zi4/aFDE0GaaX9MNe1jOUb80DpsrE78PAktHY5I88ldY2OGaAxRNO5 TTE/WWPwYEZ4J9MlxOypOr+27n+U2WAXiA71cP90= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christophe Leroy , Michael Ellerman Subject: [PATCH 5.18 0118/1095] powerpc/ptdump: Fix display of RW pages on FSL_BOOK3E Date: Mon, 15 Aug 2022 19:51:57 +0200 Message-Id: <20220815180434.466780189@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180429.240518113@linuxfoundation.org> References: <20220815180429.240518113@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Christophe Leroy commit dd8de84b57b02ba9c1fe530a6d916c0853f136bd upstream. On FSL_BOOK3E, _PAGE_RW is defined with two bits, one for user and one for supervisor. As soon as one of the two bits is set, the page has to be display as RW. But the way it is implemented today requires both bits to be set in order to display it as RW. Instead of display RW when _PAGE_RW bits are set and R otherwise, reverse the logic and display R when _PAGE_RW bits are all 0 and RW otherwise. This change has no impact on other platforms as _PAGE_RW is a single bit on all of them. Fixes: 8eb07b187000 ("powerpc/mm: Dump linux pagetables") Cc: stable@vger.kernel.org Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/0c33b96317811edf691e81698aaee8fa45ec3449.16= 56427391.git.christophe.leroy@csgroup.eu Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/mm/ptdump/shared.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/arch/powerpc/mm/ptdump/shared.c +++ b/arch/powerpc/mm/ptdump/shared.c @@ -17,9 +17,9 @@ static const struct flag_info flag_array .clear =3D " ", }, { .mask =3D _PAGE_RW, - .val =3D _PAGE_RW, - .set =3D "rw", - .clear =3D "r ", + .val =3D 0, + .set =3D "r ", + .clear =3D "rw", }, { .mask =3D _PAGE_EXEC, .val =3D _PAGE_EXEC,