[Linaro-acpi] [PATCH v3 13/17] ARM64 / ACPI: Add GICv2 specific ACPI boot support

Alexander Spyridakis a.spyridakis at virtualopensystems.com
Tue Sep 2 01:28:00 PDT 2014

On 1 September 2014 19:35, Marc Zyngier <marc.zyngier at arm.com> wrote:
> On 01/09/14 15:57, Hanjun Guo wrote:
> > From: Tomasz Nowicki <tomasz.nowicki at linaro.org>
> >
> > ACPI kernel uses MADT table for proper GIC initialization. It needs to
> > parse GIC related subtables, collect CPU interface and distributor
> > addresses and call driver initialization function (which is hardware
> > abstraction agnostic). In a similar way, FDT initialize GICv1/2.
> >
> > NOTE: This commit allow to initialize GICv1/2 only.
> I cannot help but notice that there is no support for KVM here. It'd be
> good to add a note to that effect, so that people do not expect
> virtualization support to be working when booting with ACPI.

Just a heads up for this, I run up to this problem too while testing
and by forcing some values for vgic and arch_timers I could boot a
QEMU guest without problems.

I'll try and see if it will be easy to handle this more properly
instead of hardcoded values.


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