Re: linux-next Regression: Unable to locate IOAPIC

From: Yinghai Lu
Date: Wed Jun 18 2008 - 16:41:22 EST


On Wed, Jun 18, 2008 at 12:57 PM, Daniel Exner <dex@xxxxxxxxxxxxxx> wrote:
> Yinghai Lu wrote:
>> On Sun, Jun 15, 2008 at 12:14 PM, Daniel Exner <dex@xxxxxxxxxxxxxx> wrote:
>> > Hi all,
>> >
>> > Yinghai Lu wrote:
>> >> >> To clarify myself:
>> >> >> 2.6.25.5: --> relatively fast no IOAPIC Errors in dmesg
>> >> >> 2.6.26-rc5: --> relatively no IOAPIC Errors in dmesg
>> >> >> 2.6.26-rc5 + git-acpi Patch: --> relatively no IOAPIC Errors in
>> >> >> dmesg 2.6.26-rc5 + linux-next snapshot 20080604 --> even slower than
>> >> >> before my ide Patch many "unable to locate IOAPIC" Errors
>> >> >>
>> >> >>
>> >> >> So I think the problem lies not in the acpi tree but somewhre else.
>> >> >>
>> >> >> Is it possible to tell git to explicitly _exclude_ a specific tree
>> >> >> while bisecting?
>> >>
>> >> can you check if the attached patch fix the problem?
>> >> it will not check entries before MP_intsrc_info...
>> >
>> > This fixed it, thanks :)
>> >
>> > Also maschine feels not as fast as with 2.6.25.x but noticeable faster :)
>> >
>> > I guss you no longer need the complete dmesg output?
>>
>> still need that... wonder why your irq routing have same entris from
>> your BIOS/ACPI?
> Again, sorry for the delay. I raised the Kernel buffer and added an output,
> done using rc6.
>

thanks for the dmesg

in dmesg
> Local APIC disabled by BIOS -- you can enable it with "lapic"

sound interesting...

YH
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