Re: [RFC 0/2] Add workaround for core wake-up on IPI for i.MX8MQ
From: Thomas Gleixner
Date: Wed Jun 12 2019 - 03:19:00 EST
On Mon, 10 Jun 2019, Leonard Crestez wrote:
> On 6/10/2019 5:08 PM, Marc Zyngier wrote:
> > Nobody is talking about performance here. It is strictly about
> > correctness, and what I read about this system is that it cannot
> > reliably use cpuidle.
> My argument was that it's fine if PPIs and LPIs are broken as long as
> they're not used:
> * PPIs are only used for local timer which is not used for wakeup.
Huch? The timer has to bring the CPU out of idle as any other interrupt.