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Linus Torvalds writes: > Actually, I think it's certainly valid to not allow "printk()" to happen > around the BAR probing, at least at bootup when we control all the CPU's > tightly anyway. I'd like us to disable interrupts too. On powermacs, the interrupt controller is typically inside a combo I/O ASIC which is on the PCI bus. If we take an interrupt while the ASIC's BAR is relocated or turned off, we will get a machine check when we try to access the interrupt controller and the kernel will die at that point. Paul. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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