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Date:	Tue, 24 Jul 2007 08:22:53 +0300
From:	Avi Kivity <>
To:	Jeff Dike <>
CC:	Shaohua Li <>,
	kvm-devel <>,
	lkml <>, Ingo Molnar <>
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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