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 05641C87FD1 for ; Tue, 5 Aug 2025 15:49:46 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=V8EafCVUwqhrlw+H4cY7Zgjr8E2tMajz3iJ1Uuzn/og=; b=sixNS8I0ETyWbNndczNZQ58Uid /HtQcH2eSvqXy6U3hvNwDI+mJ2/sVN+ZwSvdSD3cRM01WjCroBkBKjlBfdPQb+J1BBOwluuLW1yzW gWjvFG7iQNgbH76LWmLyitjg8dbxayuANCyjTZPbN0GA3GtLgH9KoybzmF6MRr4w/kvzM5MRlSmKP T4K4Vxw9mOBD7MP4pj7EaoOrvUJv5C23ZQ+0ylm95nu68V47C4bwI86rfXx6oeSpKiAXFlM6n7BIc s4Bg0ReHuMU7Oj+k2zCGBd9tsrGJk6p3DWeZHRAJuBpQqC7zxG+xYIPOSHNB+ED3vpvyy1F1jZXTE 3P9zeiRQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ujJv2-0000000DCUe-0P3q; Tue, 05 Aug 2025 15:49:40 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ujIp4-0000000D2cq-1J2X for linux-arm-kernel@lists.infradead.org; Tue, 05 Aug 2025 14:39:27 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 69F785C55C1; Tue, 5 Aug 2025 14:39:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4ED10C4CEF0; Tue, 5 Aug 2025 14:39:23 +0000 (UTC) Date: Tue, 5 Aug 2025 15:39:20 +0100 From: Catalin Marinas To: Ryan Roberts Cc: Yang Shi , will@kernel.org, akpm@linux-foundation.org, Miko.Lenczewski@arm.com, dev.jain@arm.com, scott@os.amperecomputing.com, cl@gentwo.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v6 0/4] arm64: support FEAT_BBM level 2 and large block mapping when rodata=full Message-ID: References: <20250805081350.3854670-1-ryan.roberts@arm.com> <985f9d53-ea5e-4da0-9427-106a58be7f26@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <985f9d53-ea5e-4da0-9427-106a58be7f26@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250805_073926_396440_A1D51DB6 X-CRM114-Status: GOOD ( 18.34 ) 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 Tue, Aug 05, 2025 at 09:16:31AM +0100, Ryan Roberts wrote: > On 05/08/2025 09:13, Ryan Roberts wrote: > > This is a new version built on top of Yang Shi's work at [1]. Yang and I have > > been discussing (disagreeing?) about the best way to implement the last 2 > > patches. So I've reworked them and am posting as RFC to illustrate how I think > > this feature should be implemented, but I've retained Yang as primary author > > since it is all based on his work. I'd appreciate feedback from Catalin and/or > > Will on whether this is the right approach, so that hopefully we can get this > > into shape for 6.18. > > I forgot to mention that it applies on Linus's current master (it depends upon > mm and arm64 changes that will first appear in v6.17-rc1 and are already merged > in master). I'm using 89748acdf226 as the base. It's fine as an RFC but, for upstream, please rebase on top of -rc1 rather than a random commit in the middle of the merging window. Also note that many maintainers ignore new series posted during the merging window. -- Catalin