Re: [Qemu-devel] [PATCH 0/3] hw/arm/virt: Support Cortex-A57

[Christoffer Dall]

On Fri, Apr 25, 2014 at 12:24:29PM +0100, Peter Maydell wrote:
> On 25 April 2014 11:42, Christoffer Dall <address@hidden> wrote:
> > So we're adding an incompletely modelled A57 to the virt board, and
> > adding a "board mounted" GICv2.  Doesn't sound like something that could
> > ever exist in real life, but I agree that the way we are tying things
> > together, semantically letting the board decide how to place the GIC
> > makes the most sense.
> 
> Actually I think a lot of A57 hardware right now is
> using a standalone GIC. The ARM Server Base System
> Architecture spec mandates a v2 GIC for level 0/1
> compliance, GICv3 only comes in at level 2. So it's
> not that far from reality (and it leaves us the
> obvious space to put in a v3 GIC emulation eventually).
> 
> > Oh well.  Let's implement GICv3 support some time.
> 
> You first :-)
> 
I hear rumors of people doing this for KVM, so I started refactoring the
QEMU GIC code to look more like the in-kernel emulation in terms of
style (patches not ready for posting yet), so we can hopefully share
some more code later on.

-Christoffer