linux-kernel - Re: [PATCH] mmu notifiers #v3

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Message-ID: <Pine.LNX.4.64.0801222207080.27378@blonde.site>
Date:	Tue, 22 Jan 2008 22:10:47 +0000 (GMT)
From:	Hugh Dickins <hugh@...itas.com>
To:	Andrea Arcangeli <andrea@...ranet.com>
cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Izik Eidus <izike@...ranet.com>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, kvm-devel@...ts.sourceforge.net,
	Avi Kivity <avi@...ranet.com>, clameter@....com,
	daniel.blueman@...drics.com, holt@....com, steiner@....com,
	Andrew Morton <akpm@...l.org>, Nick Piggin <npiggin@...e.de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH] mmu notifiers #v3

On Tue, 22 Jan 2008, Andrea Arcangeli wrote:
> 
> Then I will have to update KVM so that it will free the kvm structure
> after waiting a quiescent point to avoid kernel crashing memory
> corruption after applying your changes to the mmu notifier.

It may not be suitable (I've not looked into your needs), but consider
SLAB_DESTROY_BY_RCU: it might give you the easiest way to do that.

Hugh
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