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

[Andi Kleen]

Rene Herman <rene.herman@xxxxxxxxxxxx> writes:
>
> If there are no sensible fixes, an 0x80/0xed choice could I assume be
> hung of DMI or something (if that _is_ parsed soon enough).

Another possibility would be to key this off DMI year (or existence
of DMI year since old systems don't have it). I guess it would
be reasonable to not do any delays on anything modern.

On x86-64 it could be presumably always disabled too, although
I was always too chicken to do that.

-Andi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/