Re: [Xen-devel] [PATCH RFC 13/18] xen: introduce and use 'dom0_rambase_pfn' setting for kernel Dom0

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.05.16 at 10:45, <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx> wrote:
> On Thu, May 19, 2016 at 5:36 PM, Jan Beulich <JBeulich@xxxxxxxx> wrote:
>>>>> On 19.05.16 at 15:58, <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx> wrote:
>>> Case 1: Dom0 is driver domain:
>>> There is a Ducati firmware which runs on dedicated M4 core and decodes
>>> video. This firmware uses hardcoded physical addresses for graphics
>>> buffers. Those addresses should be inside address-space of the driver
>>> domain (Dom0). Ducati firmware is proprietary and we have no ability
>>> to rework it. So Dom0 kernel should be placed to the configured
>>> address (to the DOM0 RAM bank with specific address).
>>>
>>> Case 2: Dom0 is Thin and DomD is driver domain.
>>> All is the same: Ducati firmware requires special (hardcoded) addresses.
>>
>> For both of these cases I would then wonder whether such
>> environments are actually suitable for doing virtualization on.
> Currently we use Jacinto 6 evaluation board with DRA74X processor.
> We have both configurations (Thin Dom0 and Thich Dom0).

Which says nothing about their suitability for virtualization.

Jan


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