From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0E6F0483BF7 for ; Thu, 6 Aug 2026 17:12:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786036329; cv=none; b=WEnwj39OzOlI4rW3y3l5PlRuQBrh1KHJwd9Wj/H/wMdYtbJC5FlwiVGKysln2RyUDo3wjtpotWlwFhebgc5Zah/cfOu2BvJwMZ9boU7/wI7733BXysxfX4YhOrwCuKAd4fGHld/FMOV248Ip2PSqmvvqcGEOTteTyxj5B5yW1og= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786036329; c=relaxed/simple; bh=4HD2M00T4XImg8AXpj2LID4dg5R2Vi2aJFDVX6BCqdo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=cKIcoOTeUIuHunWqOWsb3epbM5BIdoIa0mm4A/Q59jANSgRbqJ6Dsba020fCGaaPDixsPbmagvSHMiY0jJZDUmFaYjyabe1GQSnfWcPBuf3b3cdUBZUbrwVWqciS4xw3zsA2wpUKWg9Kz2s7H9qpj6VUSYJIYObd74COptTamSI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L1QAU/7h; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="L1QAU/7h" 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit 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