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Re: [Xen-devel] [PATCH v3] docs: add PVH specification



>>> On 23.09.14 at 02:38, <mukesh.rathor@xxxxxxxxxx> wrote:
> On Thu, 18 Sep 2014 19:19:24 +0200
> Roger Pau Monne <roger.pau@xxxxxxxxxx> wrote:
> 
>> Introduce a document that describes the interfaces used on PVH. This
>> document has been designed from a guest OS point of view (i.e.: what
>> a guest needs to do in order to support PVH).
> ..... 
>> +
>> +*TODO*: we need to figure out what to do with MMIO regions, right
>> now Xen +sets all the holes in the native e820 to MMIO regions for
>> Dom0 up to 4GB. We +need to decide what to do with MMIO regions above
>> 4GB on Dom0, and what to do +for PVH DomUs with pci-passthrough.
> 
> My previous comment in earlier version on this:
> 
> "We map all non-ram regions for dom0 1:1 till the highest non-ram e820
> entry. If there is anything that is beyond the last e820 entry,
> it will remain unmapped."

But that's something that needs fixing rather than spelling out in
the documentation. I.e. Roger having this as a TODO seems quite
right to me.

Jan


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