On 08/02/2021 20.29, Marc Zyngier wrote:
I'm not sure we want to trust the FW on that particular front (no offence intended...;-).
Hey, I don't even *use* the timers IRQs; if they are unmasked it's iBoot's fault! :-)
That is my current take on this patch. Nothing in the arm64 kernel expects a FIQ today, so *when* a FIQ fires is pretty much irrelevant, as long as we handle it properly (panic). Keeping the two bits in sync is trivial, and shouldn't carry material overhead.
Sounds good then, and again that simplifies a ton of stuff. Will go for that in v2.
Aside from the lack of programmable priority, the lack of convenient masking for per-CPU interrupts is a bit of an issue...
Yeah... we'll see how that goes. -- Hector Martin (marcan@xxxxxxxxx) Public Key: https://mrcn.st/pub
