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Thu, 12 Nov 2026 12:34:06 +0000 (UTC) X-FDA: 85426409292.23.B2E6076 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf18.hostedemail.com (Postfix) with ESMTP id F09BE1C000F for ; Thu, 12 Nov 2026 12:34:04 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=mNl2+90y; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf18.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1794486845; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=NLfvAl+y+GjjcH9CNw/4ElIGTmELHExYwuG632+gsLo=; b=ibs5bkv+MnxZRCZ95zvgYZMG17T4e90m76Te5dZ5rohF7fZa7lPMBC21VVFBYENAGT2Vct RIsjMwFHMqh6iMnDJpXZB19fA8uRj5EovMcx7/7alB4vYsLkoL5eriGonS3MXYIXpdQgyu wN6JyU8wCDE2vYoewNszkSKgCLMUCj8= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=mNl2+90y; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf18.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1794486845; b=bmG9i26G2RMF8p+ifgYGQDO0LmrwrjGmA75saktA52Qf7+X459Q2CJMrMO6qtt2WLtDz79 R/QhkOYurBBfiYNC2Zax6vw89TSu7cnwVpb9Hq1ZYyaHa0hSJRe1afPdGp6/pCI1eH4aWk MIxuLUBg0mYxr6CSImJYwHLI33UaGz8= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 6769B63734; Thu, 12 Nov 2026 12:34:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5D2D1F00A05; Thu, 12 Nov 2026 12:33:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794486844; bh=NLfvAl+y+GjjcH9CNw/4ElIGTmELHExYwuG632+gsLo=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=mNl2+90yrOnioBRhxRyXJL0FYDN2ojhE2hQJmHGJhO120AvUHPL9+18HhuJPScpkr 3rOnCv3yR3j3k5V5XXExWDKfShv+OWRKf2FvQqtW7ckfxRp5OxpY5BjSPcSsEDHIOI 8LNA7XaAaenbCfO+lIDQtFXgGlIwl+HNGqUR28hdRP3wM9FCAxNSalihFtn3X+byuA yXdgdq1MCSYltVqooCuakopVO/xe7D7fpcjG/D+gItfFGUaCfSSwIOhGtmZf8qLgT0 arCGIH27msFG+pfhcuGQY5S/Ytb3YIxkI6oVeHTVEAw0y6zz3TOFJzm6E3Jd3mvulD ABZfMy26eYUQA== Message-ID: Date: Thu, 12 Nov 2026 13:33:56 +0100 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 4/6] mm: drop HIGHPTE support altogether To: Mike Rapoport , Arnd Bergmann Cc: linux-mm@kvack.org, Arnd Bergmann , Andrew Morton , Andreas Larsson , "Christophe Leroy (CS GROUP)" , Dave Hansen , Jason Gunthorpe , Linus Walleij , "Lorenzo Stoakes (ARM)" , Matthew Wilcox , Malin Jonsson , Richard Weinberger , Russell King , linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org References: <20261112112528.1116405-1-arnd@kernel.org> <20261112112528.1116405-5-arnd@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: F09BE1C000F X-Spam-Status: No, score=-17.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-Stat-Signature: rxschqfugxmqh9rojmxpx65mbrauzedt X-HE-Tag: 1794486844-628913 X-HE-Meta: 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 kNzo76oR QZcyQD0Y1hocboc+h15j8WWYO7LUciK5MKUMPa+yQvoJlkcRjCvSohGjJcHJbX/ArOTJkSsZlDQ36I39mPOMAYExTFHecPVUluhDZaVJdiGCurPeK4sSsAcW7+hcXoxImu2kKiiKKKMNCXuYrUjdFCEjYTC8ZUBrcwV0BGH1Dxrekqo+M0V34OJyMW3kNIP3/448icPCiFwlWiDmP6AdVYSpExOStkno0w6F0BWWj/QjTlFwPqzih4jdfXy83ZiKviQMWi+TVAsICMqAKg5ncbU0Gag== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 11/12/26 12:54, Mike Rapoport wrote: > On Thu, Nov 12, 2026 at 12:25:26PM +0100, Arnd Bergmann wrote: >> From: Arnd Bergmann >> >> With both x86 and arm having dropped CONFIG_HIGHPTE support, no >> architecture is left using it, so remove the remnants in common code. >> >> It is likely that further cleanups are possible in the page table >> code but those are not obvious from the config options. >> >> Signed-off-by: Arnd Bergmann >> --- >> include/linux/hugetlb.h | 5 +---- >> include/linux/mm.h | 1 - >> include/linux/pgtable.h | 9 --------- >> 3 files changed, 1 insertion(+), 14 deletions(-) > > With this and arm HIGHPTE patches applied there are still a few leftovers: > > $ git grep HIGHPTE > arch/arm/configs/vt8500_v6_v7_defconfig:CONFIG_HIGHPTE=y > mm/memory.c: * Dumping the PTE would be nice, but it's tricky with CONFIG_HIGHPTE, > mm/pgtable-generic.c: * kmapped if necessary (when CONFIG_HIGHPTE), and locked against concurrent > mm/userfaultfd.c: * index ordering when CONFIG_HIGHPTE is enabled. We mapped dst_pte > > Acked-by: Mike Rapoport (Microsoft) > With these gone Acked-by: David Hildenbrand (Arm) -- Cheers, David