On Sat, 21 Jan 2023 20:01:56 +1000, Nicholas Piggin wrote:

Interrupt entry sets the soft mask to IRQS_ALL_DISABLED to match the
hard irq disabled state. So when should_hard_irq_enable() returns true
because we want PMI interrupts in irq handlers, MSR[EE] is enabled but
PMIs just get soft-masked. Fix this by clearing IRQS_PMI_DISABLED before
enabling MSR[EE].

This also tidies some of the warnings, no need to duplicate them in
both should_hard_irq_enable() and do_hard_irq_enable().

[...]

Applied to powerpc/fixes.

[1/1] powerpc/64: Fix perf profiling asynchronous interrupt handlers
      https://git.kernel.org/powerpc/c/c28548012ee2bac55772ef7685138bd1124b80c3

cheers