Re: [Xen-devel] [PATCH v4 12/19] xen: add PCI MMIO areas to memory map

[Juergen Gross]

On 14/11/2018 13:48, Roger Pau Monné wrote:
> On Fri, Nov 02, 2018 at 01:37:31PM +0100, Juergen Gross wrote:
>> Add possible PCI space MMIO areas as "Reserved" to the memory map in
>> order to avoid using those areas for special Xen pages later.
> 
> TBH, I'm not sure this is the best way to solve the issues related to
> where to map stuff in the physmap without colliding with either
> emulated or passed through MMIO regions.
> 
> IMO I think the guest should be able to query this from Xen, overall I
> would defer this patch until there's a discussion about where to map
> stuff safely in the physmap for autotranslated guests.

Okay, I'll drop the patch for now.


Juergen