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=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 5664BC12002 for ; Wed, 21 Jul 2021 10:53:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D37361446 for ; Wed, 21 Jul 2021 10:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235410AbhGUKLP (ORCPT ); Wed, 21 Jul 2021 06:11:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:59768 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239929AbhGUKHf (ORCPT ); Wed, 21 Jul 2021 06:07:35 -0400 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 Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Thomas Gleixner , linuxppc-dev@lists.ozlabs.org, Mark Rutland , Benjamin Herrenschmidt , Geert Uytterhoeven , Andrew Morton , Mike Rapoport , Ard Biesheuvel , linux-arm-kernel@lists.infradead.org, Paul Mackerras , Jonathan Marek , linux-kernel@vger.kernel.org, Marc Zyngier , Nicholas Piggin 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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