Re: Problem of concurrency in arch/ppc/8260_io/uart.c

Tom Rini wrote:

quoted

KGDB still works for me.  Dan, any final thoughts / comments /
objections?

In the last patch I saw, we are blocking interrupts for quite a while,
across a copy_from_user(), in 8xx_write().

Yes, thats correct. I did try different ways around that but the only thing that
would work is to make copy_from_user() copy to i tmp buf and then copy the
tmp buf into the BD. Would that be better?

 Jocke

This can cause large
interrupt latencies due to page faults, it would be nice if could fix that.

-- Dan

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