Re: [Xen-devel] [RFC PATCH 00/24] [FOR 4.9] arm64: Dom0 ITS emulation

[Julien Grall <julien.grall@xxxxxxx>]

Hi,

On 28/09/16 19:24, Andre Przywara wrote:
> Andre Przywara (24):
>   ARM: GICv3 ITS: parse and store ITS subnodes from hardware DT
>   ARM: GICv3: allocate LPI pending and property table
>   ARM: GICv3 ITS: allocate device and collection table
>   ARM: GICv3 ITS: map ITS command buffer
>   ARM: GICv3 ITS: introduce ITS command handling
>   ARM: GICv3 ITS: introduce host LPI array
>   ARM: GICv3 ITS: introduce device mapping
Andre and I talked IRL about GICv3 ITS host driver, I will summarize
here for the other.

Whilst reviewing the host driver, I was wondering if we could share the
driver with Linux. I remember that Vijay's managed to do it in his
series [1] and I quite liked the idea. It makes easier to track bugs and
errata as we would rely on Linux.

We already did that in quite few place in Xen (e.g SMMUv2).

Any opinions?

Regards,

[1]
https://lists.xenproject.org/archives/html/xen-devel/2016-02/msg00047.html

>   ARM: GICv3: introduce separate pending_irq structs for LPIs
>   ARM: GICv3: forward pending LPIs to guests
>   ARM: GICv3: enable ITS and LPIs on the host

--
Julien Grall
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