Re: Requesting for freeze exception for ARM/ITS patches

[Julien Grall <julien.grall@citrix.com>]

Hi,

On 11/07/2015 11:21, Ian Campbell wrote:
> On Sat, 2015-07-11 at 09:18 +0200, Julien Grall wrote:
>>> As I explained in my reply to Jan I think this is underselling it a
>>> little, since AIUI it should make it possible to boot Xen on ThunderX
>>> and do useful things (like run guests).
>>
>> Well, PCI are able to support both legacy interrupt and MSI. If there is
>> no MSI, the PCI will use the former. The performance may be "poor" but
>> it will at least boot Xen on ThunderX and creating guest.
>
> AIUI ThunderX's on-SoC PCI devices do not provide legacy PCI INTX
> interrupts, only MSI/LPI interrupts. Perhaps someone from Cavium can
> confirm whether or not this is the case.

I haven't found any PCI controller in the Linux upstream device tree 
bindings of cavium. Although I found a thread for 2014 about it [1].

As the thread is quite old now, can some from Cavium confirm this will 
be valid on the production hardware?

Regards,

[1] https://lkml.org/lkml/2014/9/25/73

-- 
Julien Grall