Messages in this thread | | | Subject | Re: [PATCH]PCI:disable resource decode in PCI BAR detection | From | Benjamin Herrenschmidt <> | Date | Mon, 17 Sep 2007 02:21:20 +0200 |
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On Sun, 2007-09-16 at 17:37 -0600, Robert Hancock wrote: > We would already have this problem, though. If it causes problems to > disable decode on the BAR because we try to access it in interrupt > context, we would already have problems because we move the thing to > 0xFFFFFFFF during probing anyway..
Yes, it's not a new problem, I was just pointing out the fact that there are deeper issues already there in the same area.
Today, we mostly get lucky because we rarely take an irq during boot time PCI probe but I've seen it happen (one easy way to screw things up on -many- machines is to enable the DEBUG stuff in the PCI probe code and use a serial console for example, especially if access to the device with the serial ports in it gets temporarily cut off).
Cheers, Ben.
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