Messages in this thread |  | | | Date | Fri, 7 Dec 2007 00:15:33 +0000 | | From | Alan Cox <> | | Subject | Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops | |
> Changing the delay instruction sequence from the outb to short jumps
> might be the safe thing. But Linus, et al. may have experience with
> that on other architectures like older Pentiums etc.
Post boot we can use udelay() for this. Earlier I guess we could use
udelay and make sure it starts "safe" before we know the timing.
Alan
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