linux-kernel - Re: [PATCH] VMware Balloon driver

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Message-ID: <4BBA6383.7070601@redhat.com>
Date:	Tue, 06 Apr 2010 01:26:11 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Dmitry Torokhov <dtor@...are.com>,
	linux-kernel@...r.kernel.org, pv-drivers@...are.com,
	Dan Magenheimer <dan.magenheimer@...cle.com>
Subject: Re: [PATCH] VMware Balloon driver

On 04/06/2010 01:17 AM, Andrew Morton wrote:
>> The basic idea of the driver is to allow a guest system to give up
>> memory it isn't using so it can be reused by other virtual machines (or
>> the host itself).
>>      
> So...  does this differ in any fundamental way from what hibernation
> does, via shrink_all_memory()?
>    

Just the _all_ bit, and the fact that we need to report the freed page 
numbers to the hypervisor.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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