Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops

Pavel Machek
2007-12-11T19:36:32Z

Hi!

> a spec sheet, or even better a machine. I may have an original PC-XT
> still lying around in the attic, don't know if I can fire it up, but it had
> such graphics cards. I also have several early high-speed clones that were
> "overclocked".

PC-XT does not count ... it needs to be 386 capable to
count... Hmm.. but we have ucLinux now, so maybe PC-XT does count.

>> Which requires care. Have you verified all the main chipset vendors ?
>>
>>
> I obviously have not. Clearly the guys who want this port 80 hack so
> desperately have not either. That's why we are in this pickle.

Noone _wants_ this port 0x80 hack. We already have it, had it for 10+
years, and now we are trying to get rid of it -- _safely_.
Pavel
--
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