> I understand that SMM/SMI servicing can take a long time, but SMM/SMI > shouldn't happen while interrupts are masked using local_irq_disable()
Don't bet on it. > [included in spin_lock_irq()], at least on x86-architectures. If > SMM/SMI can happen even then, the NMI fix below could be generalized. > > My mention of NMI (which by definition can't be masked) is because NMI On x86 you can mask NMI briefly if you are willing to do a bit of CPU abuse. Force an NMI, longjmp out of the handler, and NMI is off until the next iret instruction or similar. We don't do this and I think Linus would object to anyone who did 8) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
