Re: [Xen-devel] [PATCH 1/2] xen: arm: log warning for interrupt configuration mismatch

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 02/03/15 13:53, Ian Campbell wrote:
> On Mon, 2015-03-02 at 13:48 +0000, Julien Grall wrote:
>> Given that, I was wondering if it would be useful to only store
>> EDGE/LEVEL in the desc->arch.type and, therefore, ignoring
>> rising/falling and low/high.
> 
> If we don't ever need to know about the polarity then sure. It would
> also get a DT-ism out of a non-DT specific place, which will make the
> ACPI folks happy I bet.

That would be required if we implement an interrupt controller or UART
driver which need to know if it's a rising/falling edge or low/high
level interrupt.

Although I don't see any UART in Linux using the IRQ type. So it would
only be an interrupt controller.

I guess we could go on this way (i.e only keeping track of level/edge)
for now.

I will give a look after my device passthrough series.

Regards,

-- 
Julien Grall

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