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xen-devel
Re: [Xen-devel] write page table in user mode
At 11:06 +0000 on 04 Feb (1202123216), Keir Fraser wrote:
> Well, this isn't just a matter of degree of aggressiveness. We currently
> don't allow updates from user space at all, ever. The motivation for
> changing that is not to do with aggressiveness of unshadowing, but with
> increased compatibility.
If the problem is really one of unshadowing and reshadowing, then I'm
not sure how to fix this without significantly blunting the teeth of
this heuristic -- even replacing this with an attempted "fast" unshadow
could fail to solve the problem for VMware.
> OTOH it's arguable whether we care about running
> VMware Workstation inside an HVM guest. :-)
We could always fix the VPC performance instead and run VMware inside
VPC inside Xen.
Tim.
--
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Citrix Systems (R&D) Ltd.
[Company #02300071, SL9 0DZ, UK.]
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