From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 290A01FDE2E; Wed, 8 Jan 2025 14:45:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736347504; cv=none; b=Xk/Ul+GdrCVqYm9/lKYySZIHvctwY2dtOYWxgZZs6sAHj2KStcibpBCEMOqa+8vMer88PtT6+OxUGE/CkfySKoj0MmZCeH0GfO1OIfByQfr2g8PT7Uw1Tg7vfJFMeBmbe0SC8NTxlp+AVsUXst1x6g/sdqpOife67Vn/cDZAvOU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736347504; c=relaxed/simple; bh=uC8bKEbbMXPZiuMUhK9phUhFqGWoF00zy7qZc2N7mUU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=gaBo152KKxAHKZzAC/9ig+8a9V7rtZCScEarjy9ZrJHRl4EsZnKuMX6DDGy2FAnYP+J+6sjZgsdW5kT8Gp4kC2MF9BzxsKOFw9IWruG4xsJKP49PMlNo3onH6/4Rguw0jTloAU/Y9VwlsoX1k8YYxg7nBVoujoPmFBv/cYz+GFw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 65D40C4CED3; Wed, 8 Jan 2025 14:45:02 +0000 (UTC) Date: Wed, 8 Jan 2025 14:45:00 +0000 From: Catalin Marinas To: Will Deacon Cc: Sangmoon Kim , Jonathan Corbet , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, ardb@kernel.org Subject: Re: [PATCH] docs: arm64: update memory layout for vmemmap region Message-ID: References: <20250102065554.1533781-1-sangmoon.kim@samsung.com> <20250108135748.GA9367@willie-the-truck> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250108135748.GA9367@willie-the-truck> On Wed, Jan 08, 2025 at 01:57:48PM +0000, Will Deacon wrote: > On Thu, Jan 02, 2025 at 03:52:37PM +0900, Sangmoon Kim wrote: > > Commit 031e011d8b22 ("arm64: mm: Move PCI I/O emulation region above > > the vmemmap region") and commit b730b0f2b1fc ("arm64: mm: Move fixmap > > region above vmemmap region") have placed PCI I/O and fixmap region > > above vmemmap region. > > > > And commit 32697ff38287 ("arm64: vmemmap: Avoid base2 order of struct > > page size to dimension region") has moved vmemmap region to higher > > address. > > > > Update document as the memory layout modified by the previous patches. > > > > Signed-off-by: Sangmoon Kim > > --- > > Documentation/arch/arm64/memory.rst | 28 ++++++++++++++-------------- > > 1 file changed, 14 insertions(+), 14 deletions(-) > > To be honest with you, this document is pretty stale (it doesn't even > mention 16k pages) and almost impossible to keep in-sync with the code. > I'd be inclined to remove these tables; we have ptdump support if people > really want to see where things are. I agree. They were somewhat useful in the early days when we didn't have as many combinations but now they get outdated easily and I'm not sure anyone still uses them as a reference. -- Catalin