On 09/28/2017 10:43 AM, Benjamin Herrenschmidt wrote:
> On Thu, 2017-09-21 at 13:21 +0200, Cédric Le Goater wrote:
>> Let me be more precise. I am saying that the interrupt-controller
>> and #interrupt-cells properties are not needed under the main interrupt
>> controller node. They can be removed from the tree and the Linux guest
>> kernel will boot perfectly well.
>
> No they are needed. They are the parents of PCI interrupts for example.
> There's something fishy here.
probably, I just removed the properties under QEMU and could
boot the guest, with disks and network.
> Do you have a DT snapshot from pHyp for me to look at ?
# lsprop /proc/device-tree/interrupt-controller\@200010000/
compatible "ibm,power-ivpe"
device_type "power-ivpe"
ibm,xive-eq-sizes
00000007 00000009 0000000c 0000000e
00000010 00000012 00000015 00000016
00000018
reg 00000002 00010000 00000000 00010000
00000002 00000000 00000000 00010000
linux,phandle 00dce438 (14476344)
ibm,xive-lisn-ranges
00094000 00000030
name "interrupt-controller"
Cheers,
C.
>
>> These properties still are needed under the sub nodes like :
>>
>> /proc/device-tree/vdevice/interrupt-controller
>> /proc/device-tree/event-sources/interrupt-controller
