Subject: Re: options DUMMY_NOPS (was Re: Config File / Kernel Building)
To: None <>
From: Michael L. VanLoon -- <>
List: port-i386
Date: 04/18/1996 07:39:13
>"Michael L. VanLoon --" writes:
>> I haven't found a machine yet where I need DUMMY_NOPS.  From my
>> experience, it is pretty much intended for ancient slow hardware, or
>> very badly designed slow hardware.

>You haven't found a machine where you NEED it or where you CANT USE

Sorry.  I haven't yet found a machine where I need extra no-ops padded
around my I/O port accesses.  Meaning:

I haven't yet found a machine where I can't use DUMMY_NOPS.

Which brings up a point:  I think it's very confusingly named.  Maybe
it should be called SLOW_IO_PORT, and turned ON by default in generic
kernels, and turned OFF for people who have discovered they don't need
it.  I think that would make it much more clear.

Or, if you want to leave it where it's slow until you explicitely
build with the option, maybe call it FAST_IO_PORT.  Then you'd have to
build with that option to disable the NOP padding.

>You don't make that clear.

Yes, so I see. :-)  I got it backwards, even though I know exactly
what it does.  My point illustrated.

  Michael L. VanLoon                       
        --<  Free your mind and your machine -- NetBSD free un*x  >--
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