Re: [Xen-devel] [MINUTES] Monthly Xen.org Technical Call (2015-07-22)

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Thu, Jul 23, 2015 at 01:17:45PM +0200, Roger Pau Monné wrote:
> El 23/07/15 a les 12.59, Konrad Rzeszutek Wilk ha escrit:
> [...]
> > We forgot to speak about dom0. This work outlined will lay out how to do it 
> > - but the pieces for dom0 are not implemented and would need work (which 
> > actually may be following most of the is_pvh in the hypervisor).
> 
> Let's do that once we have DomU nailed down and the guest ABI marked as
> stable.
> 
> Some work will indeed be needed for Dom0, for example I would like to
> avoid using the current Dom0 builder (construct_dom0, that is suited for
> PV, but all the PVH hacks just make it almost impossible to understand)
> and start from scratch with a more sane approach.

Well construct_dom0 is huge already. Doing surgery on that beast
would be most welcome.

The other issues that I think we will still encounter - which Elena
was looking for AMD - is the handling of decoding of operations
on AMD without qemu-dm involvment. Which meant that we could not
use any of the mmio_handlers - that I believe will still be an
outstanding issue.

So will the setting of various states that the toolstack does right now
but had never been done in the hypervisor - such as the tsc_scaling
for AMD.

Lastly the E820 setup and poking/re-organizing the P2M to match it.

> 
> Roger.
> 

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