linux-kernel - RE: IO-APIC + timer doesn't work

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Date:	Thu, 21 Dec 2006 13:24:44 -0800
From:	"Lu, Yinghai" <yinghai.lu@....com>
To:	ebiederm@...ssion.com
cc:	"Tobias Diedrich" <ranma+kernel@...edrich.de>,
	"Linus Torvalds" <torvalds@...l.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Andi Kleen" <ak@...e.de>, "Andrew Morton" <akpm@...l.org>
Subject: RE: IO-APIC + timer doesn't work

-----Original Message-----
From: ebiederm@...ssion.com [mailto:ebiederm@...ssion.com] 
Sent: Thursday, December 21, 2006 12:47 PM
To: Lu, Yinghai
>> +static int add_irq_entry(int type, int irqflag, int bus, int irq,
int apic, int
>> pin)

>This is fairly sane but probably belongs in mptable.c as a helper.

mparse.c?


>I am still trying to understand this enable_8259A_irq(0) case.
>As far as I can tell this is a very backwards way of enabling
>an ExtINT, as such it shouldn't be used until later.

>YH do you have any insight why on some Nvidia chipsets we apic 0 pin 2
doesn't
>work for the timer interrupt.  I thought that was what we were using in
LinuxBIOS
>for the mptable.

CK804's has problem. But later one seems fixed that problem.

YH



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