Re: [patch 0/5] optionally sync per-CPU vmstats counter on return to userspace

From: Marcelo Tosatti
Date: Tue Jul 06 2021 - 10:34:20 EST

On Tue, Jul 06, 2021 at 11:09:20AM -0300, Marcelo Tosatti wrote:
> > > And I suspect some other people won't like much a new extension
> > > to isolcpus.
> >
> > Why is that so?
> Ah, yes, that would be PeterZ.
> IIRC his main point was that its not runtime changeable.
> We can (partially fix that), if that is the case.
> Peter, was that the only problem you saw with isolcpus interface?

Oh, and BTW, isolcpus=managed_irq flag was recently added due to another
isolation bug.

This problem is the same category, so i don't see why it should be
treated especially (yes, i agree isolcpus= interface should be
improved, but thats what is available today).