@@ -229,6 +229,9 @@ notrace void arch_local_irq_restore(unsigned long mask)
return;
}
+ if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
+ WARN_ON_ONCE(in_nmi() || in_hardirq());
+
/*
* After the stb, interrupts are unmasked and there are no interrupts
* pending replay. The restart sequence makes this atomic with
@@ -321,6 +324,9 @@ notrace void arch_local_irq_restore(unsigned long mask)
if (mask)
return;
+ if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
+ WARN_ON_ONCE(in_nmi() || in_hardirq());
+
/*
* From this point onward, we can take interrupts, preempt,
* etc... unless we got hard-disabled. We check if an event
This can help catch bugs such as the one fixed by the previous change to prevent _exception() from enabling irqs. ppc32 could have a similar warning but it has no good config option to debug this stuff (the test may be overkill to add for production kernels). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/kernel/irq.c | 6 ++++++ 1 file changed, 6 insertions(+)