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 943E4C56208 for ; Thu, 6 Aug 2026 17:12:19 +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=O8Dd86fiBUYQZ0Jxe5FmhYaCKclo4qcPq5WEHvDMQ68=; b=pREkD5NufYTdvQ+ZWnA4YilLg5 60B+8fGW9SyLg9JspyImDtJFqsYXsrgS59JvNED/qDIg89cCG4c+F3F6Z6/ltGIcmnkE1RK+jn9Lx sOzHX16Zd/SlKkMvxXfetKOInhdZjFNmdmQO6vL7JhbfNWkMOXVUjoiwedb31Ve+RJEFQgrb9Ohj0 6Cd1IWgHQMPPB/W+QRaCoXlapXmXl2LIBqxqlyD+AdsBkY0/P+QXNkYM4yHL5KknfZ9ULQDuQCmzu ru3bWtycBDpI6gli1lROZi1jS7R2Fz3/BVCQEFsJAaeagiJOYbY8fJnvdiQEgZ/ebNEXxWOyXcCix 3qfWoxZA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1ws1dZ-00000006KYj-3WT0; Thu, 06 Aug 2026 17:12:09 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1ws1dY-00000006KXv-1rPK for linux-arm-kernel@lists.infradead.org; Thu, 06 Aug 2026 17:12:08 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id DD10760AB0; Thu, 6 Aug 2026 17:12:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1CF5E1F00A3A; Thu, 6 Aug 2026 17:12:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786036327; bh=O8Dd86fiBUYQZ0Jxe5FmhYaCKclo4qcPq5WEHvDMQ68=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=L1QAU/7htQBAaseuQYRxTlNW4YrCOsgmc4vLlRkyRm4i//QPUS6SZfGGqgKUs8WDW 6kt45LcfPJH7BIWea6be8hXoAfkqBTVac4ThgemBcXa+QyNFM3Okm51SYcOBQfR2KB yylnXUXB/zepHLEA3fRdR+e+zaD9dYxH8k6qBe7TL53cFZz8f/ZKmF96ay3WNFYPO/ 7K7R1+7SBIPpn5/05aqZkprdP2w2TRTWvVnJhh8Tj4KZeu6NhTH/3avlMy6Nocu8CT YL5XBMlCkvZnXWmaNzWa3u5+kY9AI0P483x4G3HsT1TcEylxfU+MZH/7lg/SsrQVHe rtbbd7FXtFl0A== From: Will Deacon To: catalin.marinas@arm.com, liulhong617@163.com Cc: kernel-team@android.com, Will Deacon , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, liulhong617 Subject: Re: [PATCH] arm64: mm: fix accidental linear mapping of no-map reserved memory Date: Thu, 6 Aug 2026 18:11:41 +0100 Message-ID: <178602241325.427442.8605112911020828131.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260513010255.3764038-1-liulhong617@163.com> References: <20260513010255.3764038-1-liulhong617@163.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 Wed, 13 May 2026 09:02:55 +0800, liulhong617@163.com wrote: > When reserved-memory regions with the "no-map" property are not > page-aligned, the kernel may accidentally map them into the linear > mapping, contradicting the no-map semantics. > > The root cause is a mismatch between /proc/iomem's address boundaries > and the actual page table mapping boundaries: > > [...] Applied to arm64 (for-next/mm), thanks! [1/1] arm64: mm: fix accidental linear mapping of no-map reserved memory https://git.kernel.org/arm64/c/7ace06a01efa Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev