linux-kernel - Re: [PATCH 3/13] KVM: kvm data structures

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Message-Id: <200610270939.31988.arnd@arndb.de>
Date:	Fri, 27 Oct 2006 09:39:31 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Avi Kivity <avi@...ranet.com>
Cc:	linux-kernel@...r.kernel.org, kvm-devel@...ts.sourceforge.net
Subject: Re: [PATCH 3/13] KVM: kvm data structures

On Friday 27 October 2006 07:53, Avi Kivity wrote:
> > Assuming that you move to the host-user == guest-real memory
> > model, will this data structure still be needed? It would
> > be really nice if a guest could simply consist of a number
> > of vcpu structures that happen to be used from threads in the
> > same process address space, but I find it hard to tell if
> > that is realistic.
> >   
> 
> We'd still need the shadow page table data structures (or the nested 
> page tables pgd).

One hack around this would be to have the shadow page tables hang
off the mm_context_t, automatically allocated when a task first
calls runs kvm. Don't know if that's worthwhile doing, considering
that it's rather ugly.

	Arnd <><
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