From nobody Sun Dec 14 08:04:34 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 120C3C00140 for ; Mon, 15 Aug 2022 18:29:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242844AbiHOS3x (ORCPT ); Mon, 15 Aug 2022 14:29:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233038AbiHOS2m (ORCPT ); Mon, 15 Aug 2022 14:28:42 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 897B9C36; Mon, 15 Aug 2022 11:20:18 -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 dfw.source.kernel.org (Postfix) with ESMTPS id D76E060ABC; Mon, 15 Aug 2022 18:19:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD849C433C1; Mon, 15 Aug 2022 18:19:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660587570; bh=3C0nmz2bwUw/YhMXl/4vqecM80SkN232zvqvmAcwXbw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iDCTkh/1/E1uZc/tqou3A6rB2nStNdNkZlbjRl1yaqf7u1HW5kh896eV2bRuN4iTh Z9hzE2CtP/OGQ/feMxVwbS4jkyyOiDN0EXJsx0lzCV5ozoa8Ld7gzQy+AIkRQBW+RM /mwT1P3WmMe/VQjxkKBj3+4JaOB3a5N8e3dAesQk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christophe Leroy , Michael Ellerman Subject: [PATCH 5.15 095/779] powerpc/ptdump: Fix display of RW pages on FSL_BOOK3E Date: Mon, 15 Aug 2022 19:55:39 +0200 Message-Id: <20220815180341.361786474@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180337.130757997@linuxfoundation.org> References: <20220815180337.130757997@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,