Re: [Xen-devel] TPR write optimization (even improves 2003 sp2)

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 08/01/2009 09:09, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote:

>> Using alloc_xenheap_page would be okay.
> 
> Is it possible to map a page allocated with alloc_domheap_page into the
> domain? The semantics must be different as it didn't work the way I
> expected it to...

OTOH I think Intel's FlexPriority depends on us using alloc_domheap_pages(),
so we may have an issue both ways round here. The other issue with giving
the guest write access to the APIC page is whether Xen can deal with random
crap being written over it. Might need to audit vlapic.c for that.

 -- Keir



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