Re: [Xen-devel] [PATCH v5 21/22] xen/arm: Add a hypercall for device mmio mapping

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Fri, 4 Mar 2016, Jan Beulich wrote:
> >>> On 04.03.16 at 07:15, <zhaoshenglong@xxxxxxxxxx> wrote:
> Overall I wonder whether this wouldn't help PVH on x86 too,
> where we currently do some hackery to (not even completely)
> map MMIO into Dom0's p2m. In such a case perhaps
> map_dev_mmio_regions() should become a general per-arch
> function right away (declared in a common header and stubbed
> out in x86 code for now). Boris, Roger?

I though that we agreed that Xen will take care of doing all the MMIO 
mappings for HVMlite/PVHv2 guests:

http://lists.xenproject.org/archives/html/xen-devel/2016-02/msg01609.html

My first idea was to use the MMIO device mapping hypercall (just like 
ARM) on the hardware domain, but I think we can get away without it on x86.

Roger.

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