Re: [Xen-devel] [RFC PATCH v1 10/10] xen/arm: GICv3 device tree parsing

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2014-03-25 at 12:33 +0000, Julien Grall wrote:
> But, I'm more worry about other OS than Linux (e.g FreeRTOS, *BSD,...)
> which may not support GICv2 before a while.

Note that this is dependent on the hardware, v2 compat mode is optional
in v3 and emulating a v2 gic on v3 without this functionality is going
to be hard and complicated enough that I think we should rule that out
right now, at least for the medium term.

Even if v2 compat is available in the h/w I'd much rather we got basic
support for GICv3 in as a first step and then start worrying about
guests which need v2 compat mode to be present.

Ian.


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