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
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