From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-la0-f52.google.com (mail-la0-f52.google.com [209.85.215.52]) by kanga.kvack.org (Postfix) with ESMTP id C7B496B0032 for ; Fri, 5 Dec 2014 13:59:53 -0500 (EST) Received: by mail-la0-f52.google.com with SMTP id hs14so1158291lab.25 for ; Fri, 05 Dec 2014 10:59:53 -0800 (PST) Received: from mail-la0-f43.google.com (mail-la0-f43.google.com. [209.85.215.43]) by mx.google.com with ESMTPS id jc11si16216771lac.31.2014.12.05.10.59.52 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 05 Dec 2014 10:59:52 -0800 (PST) Received: by mail-la0-f43.google.com with SMTP id s18so678496lam.2 for ; Fri, 05 Dec 2014 10:59:52 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20141205184418.GF31222@e104818-lin.cambridge.arm.com> References: <35FD53F367049845BC99AC72306C23D103D6DB491609@CNBJMBX05.corpusers.net> <20140915113325.GD12361@n2100.arm.linux.org.uk> <20141204120305.GC17783@e104818-lin.cambridge.arm.com> <20141205120506.GH1630@arm.com> <20141205170745.GA31222@e104818-lin.cambridge.arm.com> <20141205172701.GW11285@n2100.arm.linux.org.uk> <20141205184418.GF31222@e104818-lin.cambridge.arm.com> From: Peter Maydell Date: Fri, 5 Dec 2014 18:59:32 +0000 Message-ID: Subject: Re: [RFC v2] arm:extend the reserved mrmory for initrd to be page aligned Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Catalin Marinas Cc: Russell King - ARM Linux , Peter Maydell , "Wang, Yalin" , "linux-arm-msm@vger.kernel.org" , Will Deacon , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linux-arm-kernel@lists.infradead.org" On 5 December 2014 at 18:44, Catalin Marinas wrote: > On Fri, Dec 05, 2014 at 05:27:02PM +0000, Russell King - ARM Linux wrote: >> which makes the summary line rather misleading, and I really don't think >> we need to do this on ARM for the simple reason that we've been doing it >> for soo long that it can't be an issue. > > I started this as a revert and then realised that it doesn't solve > anything for arm32 without changing the poisoning. > > Anyway, if you are happy with how it is, I'll drop the arm32 part. As I > said yesterday, the issue is worse for arm64 with 64K pages. If you do want to retain the arm32 "mustn't be in the 4K page of the initrd tail" behaviour then it would probably be a good idea to document this in the Booting spec. thanks -- PMM -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org