Re: [Xen-devel] [PATCH v8 0/7] xen/arm: Add GICv3 support

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Sun, 2014-08-03 at 22:24 +0100, Julien Grall wrote:
> Hi Vijay,
> 
> On 23/07/14 14:41, vijay.kilari@xxxxxxxxx wrote:
> > From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
> >
> > Add GICv3 support for arm64 platform.
> >  From v6 version, this patch series is split into v6a and v6.
> > All the GICv2 and VGIC code refactoring patches of v6a are merged.
> >
> > The v8 version of GICv3 patches are posted here.
> >
> > Tested with ARM64 simulator with multicore core
> > and booted Dom0 kernel.
> 
> Do you have any plan to add support for guest? This actual series looks 
> pointless to me if we are only able to boot DOM0...

That's not pointless, it's a necessary step along the way to supporting
GICv3.

Remember: Xen wouldn't boot on these systems at all without GICv3
support (since they lack v2 compatibility in h/w), so getting to a dom0
prompt is a useful step in its own right.

>  Hence, this series 
> doesn't support GICv2 emulation on GICv3.
> 
> It would be nice if you fix the toolstack as soon as possible.

A not for application bodge at the end of the series would be nice, but
not critical IMHO. Proper toolstack level support for gic v3 can come
next.

Ian.


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