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SubjectRe: nmi_watchdog fix for x86_64 to be more like i386
Thomas Gleixner wrote:
> On Tue, 2 Oct 2007, Andi Kleen wrote:
>
>>> OTOH, the accounting hook would allow us to remove the IRQ#0 -> CPU#0
>>> restriction. Not sure whether it's worth the trouble.
>>>
>> Some SIS chipsets hang the machine when you migrate irq 0 to another
>> CPU. It's better to keep that Also I wouldn't be surprised if there are some
>> other assumptions about this elsewhere.
>>
>> Ok in theory it could be done only on SIS, but that probably would really
>> not be worth the trouble
>>
>
> Agreed.
>
> I just got a x8664-hrt report, where I found the following oddity:
>
> 0: 1197 172881 IO-APIC-edge timer
>
> That's one of those infamous AMD C1E boxen. Strange, all my systems have
> IRQ#0 on CPU#0 and nowhere else. Any idea ?
>
> tglx
>
>
Here I have with stock FC7 (2.6.22.9-91) kernel :
0: 107835 133459760 IO-APIC-edge timer

Processor:
vendor_id : AuthenticAMD
cpu family : 15
model : 107
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4000+
stepping : 1
cpu MHz : 2109.721
cache size : 512 KB

MB:
Asus M2N-E (NF570)

--Mika


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