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

[Oleksandr Dmytryshyn <oleksandr.dmytryshyn@xxxxxxxxxxxxxxx>]

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).

> Jan
>

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