Re: [RFC PATCH 1/2] powerpc/xive: guest exploitation of the XIVE interrupt controller
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2017-07-05 14:38:36
On Wed, 2017-07-05 at 21:07 +1000, David Gibson wrote:
I don't know if it helps, but we do have the ability to trigger a full system reset from CAS, so possibly we can do the XICS/XIVE instantiation in the reset path. I don't think we use that CAS reset ability yet - we just adjust the device tree and continue the boot. But it's there if we need it. Worst comes to worst, we might have to instantiate both XICS and XIVE objects, with some flags in each indicating which is active.
That could be a problem with the kernel interrupt controller. We can't really instantiate both there I think... well, actually ... maybe we could, though it's a bit messy... Cheers, Ben.