Re: Latest OpenPic changes

On Fri, Feb 11, 2000, Gabriel Paubert [off-list ref] wrote:

If it's truly the case we should consider a different solution. Masking
interrupts in a device or controller for a very short lapse is dominated
by the HW access overhead, and this is bad. sync instructions are also
extremely bad.

I implemented it in both enable and disable for "correctness" so that the
status of the controller is guaranteed when exiting any of those 2
functions. I agree that the unmask case may not be important.

I beleive the sync here can also be completely removed too. A single
eieio is plenty enough because of the read. Isn't it ?

Ben.


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/