Re: reason for delay in arch/x86/kernel/traps.c::io_check_error()?

From: Andi Kleen
Date: Mon Mar 09 2009 - 23:30:37 EST


On Mon, Mar 09, 2009 at 01:33:44PM -0600, Chris Friesen wrote:
>
> Hi all,
>
> I was just wondering about the basis for the delay in io_check_error().
> The ICH7 manual doesn't have any mention of a delay being required
> here--is it necessary for other hardware, something not mentioned in the
> manual, or just an accident?

The complete NMI error logging handling does not really apply to any modern
chipset; it's for ancient hardware (286, 386 generation). Those often
needed strange delays too.

-Andi

--
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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