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Date:	Tue, 24 Jul 2007 08:22:53 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Jeff Dike <jdike@...toit.com>
CC:	Shaohua Li <shaohua.li@...el.com>,
	kvm-devel <kvm-devel@...ts.sourceforge.net>,
	lkml <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [RFC 0/8]KVM: swap out guest pages

Jeff Dike wrote:
> On Mon, Jul 23, 2007 at 01:27:40PM +0300, Avi Kivity wrote:
>   
>> Having an address_space (like your patch does) is remarkably simple, and 
>> requires few hooks from the current vm.  However using existing vmas 
>> mapped by the user has many advantages:
>>     
>
> It's also needed for a SKAS-like UML client, where the host side will
> need to make system calls on behalf of the guest.
>
>   

Even in the current model, guest physical memory is mmap()ed into host
userspace.  The kernel cannot enforce this, however.

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

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