Re: [PATCH v2 00/10] arm64: Add initial support for FEAT_WFxT

Catalin Marinas
2022-04-20T17:25:06Z

On Tue, Apr 19, 2022 at 07:27:45PM +0100, Marc Zyngier wrote:
> A potential addition to this series would be to remove the event
> generation from the counters, and rely on the timeout where it
> matters (spinlocks?). Feedback welcome.

I think we still need to keep the event generation around, at least for
hardware bugs we don't know about. I don't think user-space rely on it
though, people tend to come up with weird delays like isb ;). But yes,
the WFET should be handy when it turns up in hardware.

--
Catalin