Re: [Qemu-devel] [kvm-unit-tests PATCH 00/10] arm/arm64: add gic framework

[Christoffer Dall]

On Mon, May 23, 2016 at 05:24:23PM +0200, Andrew Jones wrote:
> On Wed, May 18, 2016 at 11:07:14AM +0200, Christoffer Dall wrote:
> > Hi Drew,
> > 
> > Thanks for doing this.  I'm happy to see some tests for the GIC.
> > 
> > I've been pondering with how to write unit tests for all the MMIO
> > implementations.  If you have some thoughts on how that could be easily
> > fitted into this framework, that would probably be a good place to do it
> > ;)
> 
> Hi Christoffer,
> 
> Sorry for my slow response, I've been on vacation. For MMIO
> implementations, are you referring to the emulation done for
> gicv2 accesses and for gicv3 legacy accesses? And, if so, is
> your question how we might be able to use the same test
> framework for both? And, if that's so, then I think this series
> gets us pretty close already. If I'm completely off-base, then
> please give me a quick high-level description of what you'd like
> to be able to do.
> 
What I meant was testing all the MMIO accesses to the various
distributor MMIO regions.

For example, writing full words to all registers (some value) reading
back the value, correcting for RAZ/WI semantics, and testing that byte
accesses to those registers where that's allowed also works.

If adding that on top of this series sounds like a good idea, someone
should add it to the bottom of their (presumably already long) todo
list, myself included.

Thanks,
-Christoffer