Re: [Xen-devel] Freeze with 2.6.32.19 and xen-4.0.1rc5, acpi problems

[Claus Rosenberger <Claus.Rosenberger@xxxxxxxxx>]

Am 25.08.2010 01:22, schrieb Claus Rosenberger:
>  I checked out these options, following result
>>>> - acpi=ht noapic     => worked
>>>> - noapic             => didn't work, disk errors while booting, no 
>>>> functional system
>>>> - acpi=ht apic=debug => worked
>>>>
>>>> So it seems i definitly need the option acpi=ht or acpi=off or something 
>>>> like that.
>>>>
>>> Keir, Jeremy: Any idea why acpi=ht is needed to make Intel DQ45CB (Q45 
>>> chipset) work?
>>>
>>> Without "acpi=ht" the system freezes randomly without any 
>>> log/debug/serialconsole output..
>> At a random guess, there's something strange about the SCI interrupt. 
>> When booting native, does "acpi" get irq 9 or something else?  Is there
>> a BIOS setting relating to SCI or ACPI interrupts?
>>
> 
> The kernel was running native without that problems, i attached dmesg. I
> didn't find any BIOS options like that.
> 


a new test was done loading libata with option noacpi=1

- acpi=ht noapic     => worked
- noapic             => didn't work, disk errors while booting, no functional 
system
- acpi=ht apic=debug => worked
- xen without options but loading libata with option noacpi=1    => worked

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