[Xen-devel] Re: shadow2 corrupting PV guest state

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

Keir Fraser wrote:
> The shadow-refcount code in shadow2 is very new. It's likely to have bugs
> that need shaking out.
Yep, that's pretty much what I'd expect.

>  It won't be a deferred pagetable update because they
> don't exist in shadow2 (updates are always synchronously emulated).
>   
OK, so every write to a pagetable page will take the fault&emulate 
path?  What's your confidence level in the emulator?
   J

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