Re: [Xen-devel] (v2) Design proposal for RMRR fix

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.01.15 at 01:45, <kevin.tian@xxxxxxxxx> wrote:
>>  From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
>> The proposed new hypercall represents _only_ reserved regions.
>> But it was said several times that making the existing one work
>> for HVM (and then fit the purposes here) is at least an option
>> worth investigating.
> 
> I did consider this option but there's a reason which makes it not
> suitable. Based on current discussion, we need provide per-region
> override (force/try) to the caller e.g. hvmloader here, while 
> XENMEM_memory_map only provides plain e820 information, and
> extending it w/ such override for general e820 entry looks a bit
> weird. 

I don't see why - the returned table only resembles an E820 one,
i.e. I can't see why we couldn't steal a flag bit from e.g. the type
field, or define a maybe-reserved type.

Jan


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