From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id CBBAE6B00B4 for ; Sat, 30 May 2009 05:07:32 -0400 (EDT) Date: Sat, 30 May 2009 02:05:13 -0700 From: "Larry H." Subject: Re: [patch 0/5] Support for sanitization flag in low-level page allocator Message-ID: <20090530090513.GO29711@oblivion.subreption.com> References: <20090522113809.GB13971@oblivion.subreption.com> <20090523124944.GA23042@elte.hu> <4A187BDE.5070601@redhat.com> <20090527223421.GA9503@elte.hu> <20090528072702.796622b6@lxorguk.ukuu.org.uk> <20090528090836.GB6715@elte.hu> <20090528125042.28c2676f@lxorguk.ukuu.org.uk> <84144f020905300035g1d5461f9n9863d4dcdb6adac0@mail.gmail.com> <20090530075033.GL29711@oblivion.subreption.com> <4A20E6CF.8070003@cs.helsinki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4A20E6CF.8070003@cs.helsinki.fi> Sender: owner-linux-mm@kvack.org To: Pekka Enberg Cc: Alan Cox , Ingo Molnar , Rik van Riel , linux-kernel@vger.kernel.org, Linus Torvalds , linux-mm@kvack.org, Ingo Molnar , pageexec@freemail.hu, Linus Torvalds List-ID: On 10:57 Sat 30 May , Pekka Enberg wrote: > Larry H. wrote: >> Furthermore, selective clearing doesn't solve the roots of the problem. >> It's just adding bandages to a wound which never stops bleeding. I >> proposed an initial page flag because we could use it later for >> unconditional page clearing doing a one line change in a header file. >> I see a lot of speculation on what works and what doesn't, but >> there isn't much on the practical side of things, yet. I provided test >> results that proved some of the comments wrong, and I've referenced >> literature which shows the reasoning behind all this. What else can I do >> to make you understand you are missing the point here? > > Hey, if you want to add a CONFIG_ZERO_ALL_MEMORY_PARANOIA thing that can be > disabled, go for it! But you have to find someone else to take the merge > the SLAB bits because, quite frankly, I am not convinced it's worth it. And > the hand waving you're doing here isn't really helping your case, sorry. For a second I thought it was Ingo who was writing this e-mail. Apologies about the confusion. What was the technical explanation and reasoning behind your remarks, again? Larry -- 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