linux-kernel - Re: [patch 0/6] Guest page hinting version 7.

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Message-Id: <200903281705.29798.rusty@rustcorp.com.au>
Date:	Sat, 28 Mar 2009 17:05:28 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	virtualization@...ts.linux-foundation.org
Cc:	Martin Schwidefsky <schwidefsky@...ibm.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, virtualization@...ts.osdl.org,
	akpm@...l.org, nickpiggin@...oo.com.au, frankeh@...son.ibm.com,
	riel@...hat.com, hugh@...itas.com
Subject: Re: [patch 0/6] Guest page hinting version 7.

On Saturday 28 March 2009 01:39:05 Martin Schwidefsky wrote:
> Greetings,
> the circus is back in town -- another version of the guest page hinting
> patches. The patches differ from version 6 only in the kernel version,
> they apply against 2.6.29. My short sniff test showed that the code
> is still working as expected.
> 
> To recap (you can skip this if you read the boiler plate of the last
> version of the patches):
> The main benefit for guest page hinting vs. the ballooner is that there
> is no need for a monitor that keeps track of the memory usage of all the
> guests, a complex algorithm that calculates the working set sizes and for
> the calls into the guest kernel to control the size of the balloons.

I thought you weren't convinced of the concrete benefits over ballooning,
or am I misremembering?

Thanks,
Rusty.
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