Hi,
What I meant by using '>' for quoting is all my reply should be prefixed
with '>'. You write your reply normally.
You can do that in gmail by switching the e-mail from HTML to plain text.
On 26/02/18 07:31, bharat gohil wrote:
On Thu, Feb 22, 2018 at 4:57 PM, Julien Grall <julien.gr...@arm.com
<mailto:julien.gr...@arm.com>> wrote:
This looks quite wrong to me. By modifying the interrupt parent
property, you also modify which interrupt controller will be used
for routing the interrupt. This is probably the reason of the hang
you mention below.
What are the interrupts controller you have on your platform?
>It has interrupt controller which change the polarity of SPI IRQ
before redirect to GIC-400.
>In DTB debug, I got following trace,
>(XEN) irq 0 not connected to primary controller. Connected to
/intpol-controller@10220a80.
>I think Xen skip interrupt controller(if other than GIC) while domain
creation.
Xen will not try to map interrupt that are routed to a different
interrupt controller. This is because we don't know how to translate the
property 'regs' for those interrupts.
>Do you have suggestion to solve this?
>Do I need to support custom IRQ controller in Xen or hard code the
custom controller register in Xen and modified DTB with GIC as primary
controller?
If any interrupts used by Xen (e.g UART) are behind that custom IRQ
controller, then you would need to add the driver in Xen.
There was an attempt to provide a framework for hooking custom IRQ
controller in Xen (see [1]).
You could probably look for doing something similar for your board.
Cheers,
[1]
https://lists.xenproject.org/archives/html/xen-devel/2017-04/msg00991.html
--
Julien Grall
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