Nicholas Piggin 768c470103 powerpc/64/interrupt: Reconcile soft-mask state in NMI and fix false BUG ... If a NMI hits early in an interrupt handler before the irq soft-mask state is reconciled, that can cause a false-positive BUG with a CONFIG_PPC_IRQ_SOFT_MASK_DEBUG assertion. Remove that assertion and instead check the case that if regs->msr has EE clear, then regs->softe should be marked as disabled so the irq state looks correct to NMI handlers, the same as how it's fixed up in the case it was implicit soft-masked. This doesn't fix a known problem -- the change that was fixed by commit 4ec5feec1a ("powerpc/64s: Make NMI record implicitly soft-masked code as irqs disabled") was the addition of a warning in the soft-nmi watchdog interrupt which can never actually fire when MSR[EE]=0. However it may be important if NMI handlers grow more code, and it's less surprising to anything using 'regs' - (I tripped over this when working in the area). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211004145642.1331214-5-npiggin@gmail.com		2021-10-07 19:54:55 +11:00
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asm	powerpc/64/interrupt: Reconcile soft-mask state in NMI and fix false BUG	2021-10-07 19:54:55 +11:00
uapi/asm	powerpc/papr_scm: Add support for reporting dirty-shutdown-count	2021-06-25 14:47:18 +10:00