Messages in this thread | | | Subject | Re: [PATCH 08/18] arm64: cpufeature: Add a feature for FIQ support | From | Hector Martin <> | Date | Tue, 9 Feb 2021 00:51:09 +0900 |
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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@marcan.st) Public Key: https://mrcn.st/pub
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