Re: [Xen-ia64-devel] RE: vcpu_translate issue

[Matt Chapman <matthewc@xxxxxxxxxxxxxxx>]

On Thu, Nov 10, 2005 at 04:44:19PM +0800, Tian, Kevin wrote:
> 
> A correction here. I'm not against propagate NaTpage attribute to
> machine TLB, and only claim that Xen can just respond per attribute what
> guest specified. No need to care whether page 0 is mapped specially. ;-)

Yes, that's what I meant to say - we can propagate the NaTpage
attribute to the machine TLB, then we can simply reflect the NaT
fault.

I think delivering a TLB miss is not sufficient.  Because the
mapping for the zero page is indeed in Linux's pagetable, the TLB
miss handler succeeds in finding and inserting it, and the page
fault handler is not triggered.

Matt


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