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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A908C4452B for ; Tue, 21 Jul 2026 17:19:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=W5lsuJ2TK8ReKuQv41colmY0kKFrt517EXbX/U4o4CA=; b=pyc3N9IjNXXOwhOefiQwgaa0vB o9kl9PeAPLJnejetQpMruvHD6qYc+CQz/rKcT+AXgpBkcclzg6/xvdEV5cm7qyNt8SAxATQVRaPTu JQxri/sUtCkgOLO2cb+fgJ/RDU48lhgtJw+zqaYtjSzZdBRWpufq36OyZRDUXHvYbeJH5jp1oyJbL YXzCzKf5MVHLvoF0LZfikJapDg5AKfvfqWGE+tsO1hFq1fXCsvhxpe3wfbkcAK9bv6VtLgpE8Th0s iPXPOBY3tgEEsXUdaMRSbEWfx9pFtOOzSvZaoSr/Cra8f4jZw7vI/TxQ4qXV8/G9sgqw6PDd4miMN Oi9Vo/ZA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wmE7M-0000000A2JS-3Q4T; Tue, 21 Jul 2026 17:18:56 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wmE7M-0000000A2JJ-0zmG for linux-arm-kernel@lists.infradead.org; Tue, 21 Jul 2026 17:18:56 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 024274035E; Tue, 21 Jul 2026 17:18:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2B5CC1F000E9; Tue, 21 Jul 2026 17:18:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784654335; bh=W5lsuJ2TK8ReKuQv41colmY0kKFrt517EXbX/U4o4CA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hxoJfeET3T526QXp00quUEwQiOevzo6VUuI3w8NS/NxwUVkTvuDLoG1eHp50Dde/9 /IXu72DL1bn1EWLcboCW5yYfKmHJHvFkEmiTKSD50e5FPZDLYl01J7xvScImtnjYsD JjCFTV9E18oVmDRk6//jVQnQPSKBVwQkz+JZAznrV59NxrElBd+JMBafczgRMx7oLC Xk+QhdT3awjgGop2C8uqzN9chBVanihxeMqzT09p6ffF6d1usfV2yA5oGV6cvQhTGg ijzCa3QHEPFfay0pbdy6BGom8WqI5JNIb1VR1ldOAP+yYr9WQIG3Qp3fDWX6Fy6n4l JLEjIFNb1CxiQ== From: Will Deacon To: muchun.song@linux.dev, osalvador@suse.de, akpm@linux-foundation.org, ljs@kernel.org, david@kernel.org, liam@infradead.org, Dev Jain Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , riel@surriel.com, vbabka@kernel.org, harry@kernel.org, jannh@google.com, lance.yang@linux.dev, kas@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, apopple@nvidia.com, rcampbell@nvidia.com, ziy@nvidia.com, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, ak@linux.intel.com, nao.horiguchi@gmail.com, mel@csn.ul.ie, j-nomura@ce.jp.nec.com, pfalcato@suse.de, tglx@kernel.org, dave.hansen@intel.com, jpoimboe@kernel.org, linux-arm-kernel@lists.infradead.org, ryan.roberts@arm.com, anshuman.khandual@arm.com Subject: Re: [PATCH v3 0/6] Fix incorrect access of hugetlb pte entries Date: Tue, 21 Jul 2026 18:18:38 +0100 Message-ID: <178464737122.1305746.12295190523058911270.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260703114202.365553-1-dev.jain@arm.com> References: <20260703114202.365553-1-dev.jain@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 03 Jul 2026 11:41:53 +0000, Dev Jain wrote: > There are various places which use ptep_get() to get the pte entry > corresponding to a hugetlb folio. Some arches (like s390) have special > handling to compute the pteval, so they provide huge_ptep_get(). Use this > helper consistently. > > Additionally, some code paths may provide huge_ptep_get with an unaligned > address. This is a problem on arm64 (I checked other arches and it looks > fine for them), which is fixed in patch 1. The fix is made to be > to huge_ptep_get() - that is wider churn and we can do that later. > > [...] Applied first patch to arm64 (for-next/fixes), thanks! [1/6] arm64: make huge_ptep_get handled unaligned addresses https://git.kernel.org/arm64/c/9175a8c7cfe88 I'm hoping Andrew can drop this from the mm tree to avoid a duplicate, but I didn't hear back yet and I'd like to land the fix. Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev