Re: [PATCH 45/79] [PATCH] fix apic acking of irqs

[Andi Kleen]

"Maciej W. Rozycki" <macro@xxxxxxxxxxxxxx> writes:
> 
>  Please note that ESR may hold some leftover state from whatever happened 
> before Linux has taken control, so it is reasonable and I think actually 
> recommended by Intel (FWIW) to clear the register before enabling the 
> error interrupt.  For how to clear the ESR properly, please see 
> setup_local_APIC() -- subtle differences and errata in various APIC 
> implementations have made it more complicated than necessary, sigh...

iirc a lot of the ESR weirdness was on NUMAQ only, which is down to one 
of two last machines running Linux which will hopefully die soon ...

-Andi

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