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=-11.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 436F3C63797 for ; Wed, 21 Jul 2021 10:48:35 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 BD4506135B for ; Wed, 21 Jul 2021 10:48:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BD4506135B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4GVC411Wzpz2yfZ for ; Wed, 21 Jul 2021 20:48:33 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=ID6hrb0z; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=will@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=ID6hrb0z; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4GVC3T3NhFz2yP1 for ; Wed, 21 Jul 2021 20:48:05 +1000 (AEST) Received: by mail.kernel.org (Postfix) with ESMTPSA id DDCED6138C; Wed, 21 Jul 2021 10:47:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626864482; bh=qR4EPIkAAUhsdXzNobnISSq8AvXs8KveVzIPRgC1ZSg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ID6hrb0zF1vZAWTO/w64wkH49bmbmEGRBdhTkmz8CXH9ZQ5RF7SsBYyX6mXFyyASq f07Ztur3Q8lPzlkZAf/va0W1gLo9bnlyRHdsKrfjsu5sUGuqAvqSocHtj4yFnuL0cJ HiqjLARL7TjecLsxZuUzEPQkZx1WtlU6O3iMOLP74mxKJjN7PE3iMkNtcDR6HQfFGj XRT3R6bViCjK4K/kVOCKFpFBDjuL9BhP+zLL9tekrqcd4Umomaxh0EnxUYxWWnlo0R ld9xxHa8rszAKphlvt/IYjNPlhOofDAjcAFSKgUAqmggENwS95WZ2jZptkug0eO44b WhsgW3cGaup2Q== From: Will Deacon To: Christophe Leroy , Michael Ellerman Subject: Re: [PATCH v2] Revert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge" Date: Wed, 21 Jul 2021 11:47:53 +0100 Message-Id: <162686329170.980657.905966885675716231.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <87r1fs1762.fsf@mpe.ellerman.id.au> References: <20210720202627.Horde.vlszNhxkKrLIg0-3Sn2ucw5@messagerie.c-s.fr> <87r1fs1762.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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: Mark Rutland , Marc Zyngier , linux-kernel@vger.kernel.org, Jonathan Marek , Will Deacon , catalin.marinas@arm.com, linuxppc-dev@lists.ozlabs.org, Nicholas Piggin , Ard Biesheuvel , Geert Uytterhoeven , linux-arm-kernel@lists.infradead.org, Paul Mackerras , Thomas Gleixner , kernel-team@android.com, Andrew Morton , Mike Rapoport Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, 21 Jul 2021 17:02:13 +1000, Michael Ellerman wrote: > This reverts commit c742199a014de23ee92055c2473d91fe5561ffdf. > > c742199a014d ("mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge") > breaks arm64 in at least two ways for configurations where PUD or PMD > folding occur: > > 1. We no longer install huge-vmap mappings and silently fall back to > page-granular entries, despite being able to install block entries > at what is effectively the PGD level. > > [...] Thank you Michael! I owe you a beer next time I see you, if we don't go extinct before then. Applied to arm64 (for-next/fixes), thanks! [1/1] Revert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge" https://git.kernel.org/arm64/c/d8a719059b9d Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev