Re: [Xen-devel] [RFC 06/19] xen/arm: Implement hypercall PHYSDEVOP_map_pirq

[Andrii Tseglytskyi <andrii.tseglytskyi@xxxxxxxxxxxxxxx>]

Hi Julien,

On Tue, Aug 19, 2014 at 12:55 AM, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
>
>
> On 18/08/14 14:20, Andrii Tseglytskyi wrote:
>>
>> Hi All,
>
>
> Hello,
>
>
>> Could someone answer - what is the future of this patch series? Are
>> you going to post patches as non RFC ?
>
>
> I've sent a v2 a couple of weeks ago:
>
> https://patches.linaro.org/34666/
>
>
>> Will it be merged to Xen 4.5 ?
>
> I hope so. If I can't get the whole series in Xen 4.5, I will at least try
> to get the interrupt assignment in it.
>

Sounds great. Thank you.

>
>> I'm asking because it is *very useful* for development we have in
>> GlobalLogic. In our current state we need to route some HW irqs to
>> domainU (Android) and we need them 1 to 1.
>
>
> The new approach allocate dynamically the virtual IRQ number. I chose this
> solution because otherwise Xen is allocating memory which is never used.
>
> You could hack this patch to support 1:1 (see vgic_allocate_virq and
> vgic_free_virq).
>
> OOI, why do you need Virtual IRQ == Physical IRQ?
>

Because I have few devices in DomU, which use hardcoded IRQ numbers.

BTW - which code allocates IRQ number dynamically? My code is almost
the same and I have 1 to 1 in domU ?

Regards,
Andrii

>
>> For now we use similar patch series -
>> http://lists.xen.org/archives/html/xen-devel/2013-07/msg01146.html but
>> looks like it will not be merged
>
>
> IIRC, there was few comments in the v2 and no v3 has been sent after.
>
> Regards,
>
> --
> Julien Grall



-- 

Andrii Tseglytskyi | Embedded Dev
GlobalLogic
www.globallogic.com

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel