Re: [PATCH 0/6] x86/entry,lockdep: Improve IRQ state tracking

[Peter Zijlstra]

On Wed, May 27, 2020 at 05:45:27PM +0200, Peter Zijlstra wrote:
> Ahmed and Sebastian wanted additional lockdep_assert*() macros and ran
> into header hell.
> 
> Move the IRQ state into per-cpu variables, which removes the dependency on
> task_struct, which is what generated the header-hell.
> 
> And fix IRQ state tracking to not be affected by lockdep_off() (it really
> should not have been anyway) and extends IRQ state tracking across (x86)
> NMIs.

After having it run kernel builds for a while, I've got a realy weird
(false-positive) lockdep_assert_irqs_enabled() trigger.

So something isn't quite right. I'll prod at it some moar.