Re: [Xen-devel] update_runstate_area and Linux KPTI

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 02.03.18 at 17:04, <andrew.cooper3@xxxxxxxxxx> wrote:
> The proper way to do this is indeed by a nominated (guest) physical
> address, at which point Xen can make all/any updates at times of its
> choosing, and the guests pagetable/permissions state at an instantaneous
> moment don't matter.
> 
> If you've got time to do this, then please do.  It will be a definite
> improvement.

Just to be avoid unnecessary effort in the wrong direction: I don't
think you can alter the current interface. You'd have to add a new
one, and we could then deprecate (but never abandon) the current
one.

Jan


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