linux-kernel - Re: [BUG] 2.6.24 refuses to boot

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Date:	Mon, 04 Feb 2008 14:13:24 -0500
From:	Mark Lord <liml@....ca>
To:	Gene Heskett <gene.heskett@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Jeff Garzik <jeff@...zik.org>,
	Chris Rankin <rankincj@...oo.com>, linux-ide@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] 2.6.24 refuses to boot - ATA problem?

Gene Heskett wrote:
> On Sunday 03 February 2008, Ingo Molnar wrote:
>> * Gene Heskett <gene.heskett@...il.com> wrote:
>>> I believe its the same, but lemme paste it for sure, yes:
>>> [   26.339926] ENABLING IO-APIC IRQs
>>> [   26.340119] ..TIMER: vector=0x31 apic1=0 pin1=0 apic2=-1 pin2=-1
>>> [   26.350129] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
>>> [   26.350182] ...trying to set up timer (IRQ0) through the 8259A ... 
>>> failed. [   26.350185] ...trying to set up timer as Virtual Wire IRQ...
>>> failed. [   26.360186] ...trying to set up timer as ExtINT IRQ... works.
>>>
>>> The third line is the only line that makes it to the screen during the
>>> boot trace.
>>>
>>> Now, what does this tell us?
>> the question would be:
>>
>> - if you remove the acpi_use_timer_override boot flag
>> - and if you boot a kernel with this hack applied
>>
>> => do those weird PATA failures come back?
>>
>> If the failues do _not_ come back then the problem is somehow
>> affected/worked-around by the IO-APIC code that generates the above 4
>> lines. If the failures are still the same then the above 4 lines are
>> really just an uninteresting side-effect of the acpi_use_timer_override
>> flag - and the real side-effects (that fixes PATA on your box) are to be
>> found elsewhere.
>>
>> Sadly, the latter variant is the expected answer.
>>
>> 	Ingo
> 
> And at this point, I can't tell.  This reboot was from a cold start, without 
> the argument, and cold by long enough to make the rounds about the house and 
> pick up a beer, but not take my evening pillbox.  A minute cold, maybe 2 max.  
> The log is clean since except for a kudzu nag of some sort:
..

Just to muddy your observations:  it is quite possible that a cold (power-off)
reboot may be required to properly observe what happens here.

Cheers
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