Re: [Xen-devel] [PATCH for-4.11] x86/dom0: add extra RAM regions as RESERVED for PVH memory map

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 03.05.18 at 11:56, <roger.pau@xxxxxxxxxx> wrote:
> When running as PVH Dom0 the native memory map is used in order to
> craft a tailored memory map for Dom0 taking into account it's memory
> limit.
> 
> Dom0 memory is always going to be smaller than the total amount
> of memory present on the host, so in order to prevent Dom0 from
> relocating PCI BARs over RAM regions mark all the RAM regions not
> available to Dom0 as RESERVED in the memory map.

I'm basically fine with this change, but I think I'd prefer UNUSABLE over
RESERVED.

> I also think this should be included in the 4.11 release because it
> only modifies PVH Dom0 builder code, and that's still experimental, so
> there's no chance of breaking a supported feature.

This can equally be taken as a reason why there's no point in it being
put in for 4.11. But that's not to say I'm opposed to doing so, it's just
that I consider the argument questionable.

Jan



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