Re: [PATCH 15/15] xen: tools: expose EPC in ACPI table

["Huang, Kai" <kai.huang@linux.intel.com>]

On 7/17/2017 10:54 PM, Roger Pau Monné wrote:
> On Sun, Jul 09, 2017 at 08:16:05PM +1200, Kai Huang wrote:
>> On physical machine EPC is exposed in ACPI table via "INT0E0C". Although EPC
>> can be discovered by CPUID but Windows driver requires EPC to be exposed in
>> ACPI table as well. This patch exposes EPC in ACPI table.
>>
>> Signed-off-by: Kai Huang <kai.huang@linux.intel.com>
>> ---
>>   tools/firmware/hvmloader/util.c  | 23 +++++++++++++++++++
>>   tools/firmware/hvmloader/util.h  |  3 +++
> 
> Is there any reason this needs to be done in hvmloader instead of
> libacpi? I'm mostly asking this because PVH guests can also get ACPI
> tables, so it would be good to be able to expose EPC to them using
> ACPI.

Hi Roger,

Thanks for comments. I didn't deliberately choose to do in hvmloader 
instead of libacpi. It seems libxl only builds ACPI table when guest is 
HVM, and it doesn't use any device model, and I think I have covered 
this part (see changes to init_acpi_config). Is there anything that I 
missed?

Thanks,
-Kai
> 
> Thanks, Roger.
> 
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