linux-kernel - Re: [ANNOUNCE] kmemcheck v7

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Message-ID: <e2e108260805100404h63f02194r62e53f79ae2a403f@mail.gmail.com>
Date:	Sat, 10 May 2008 13:04:03 +0200
From:	"Bart Van Assche" <bart.vanassche@...il.com>
To:	"Pekka Enberg" <penberg@...helsinki.fi>
Cc:	"Vegard Nossum" <vegard.nossum@...il.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"Christoph Lameter" <clameter@....com>,
	"Daniel Walker" <dwalker@...sta.com>,
	"Andi Kleen" <andi@...stfloor.org>,
	"Randy Dunlap" <randy.dunlap@...cle.com>,
	"Josh Aune" <luken@...er.org>, "Pekka Paalanen" <pq@....fi>
Subject: Re: [ANNOUNCE] kmemcheck v7

On Sat, May 10, 2008 at 11:06 AM, Pekka Enberg <penberg@...helsinki.fi> wrote:
> Bart Van Assche wrote:
>>
>> It's a bit late but I finally found out about your announcement of
>> kmemcheck version 7. Are you familiar with the patch that adds support
>> to Valgrind for User Mode Linux ? I'm not sure what the best approach
>> is -- letting the kernel do its own checking like kmemcheck or extend
>> Valgrind such that it supports UML. Anyway, the techniques applied in
>> Valgrind may be useful for kmemcheck too, such as the algorithms used
>> in Valgrind to compress the memory state information.
>
> It's better to do it with the native kernel so you can "valgrind" all the
> interesting driver code.

That's right. This is the paper I was referring to that details how to
minimize the memory consumption when tracking state information:
http://www.valgrind.org/docs/shadow-memory2007.pdf

Bart.
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