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SubjectRe: PCI timings in kernel???
On Tue, 17 Nov 1998, Mark Lord wrote:

> > We really should NOT have PCI chipset-tuning code in the kernel
> > UNLESS it is required to boot Linux (very unlikely).
> ..
> > If it is about PCI latency timer settings, you must then implement
> > some piece of code in the kernel such that you can guarentee all DMA
> > activity to/from the controller has ceased around the user request to
> > change the PCI latency timer value. At least last time I checked,
> > this was necessary.
>
> Not quite what I had in mind. But as it happens, exclusive access
> to the IDE controller chip is indeed guaranteed for such updates.
>
> The original posting had to due with an upcoming explosion
> in kernel content..

Well explosion may not be the right word........I am looking to post an
ide-pre-patch test for reports. Once the reports come back with no errors
related to the changes, that is when I would begin to press Linus to
consider the additions of these chipsets for inclusion in 2.2.0. This
would be done on a case by case basis with documentaion that each is
stable. Should any or all fail this requirement.........they would appear
in 2.3.X development to be resolved with the next 1xx revisions to get
them right.........

> --
> mlord@pobox.com
>

Cheers,
Andre Hedrick
The IDE-FNG for Linux
The APC UPS Specialist for Linux

http://www.dyer.vanderbilt.edu/server/udma/
http://www.dyer.vanderbilt.edu/server/apcupsd/apcupsd-3.5.0.bin.tar.gz



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