Re: [Qemu-devel] [patch 2/2] QEMU BOCHS bios patches to use maxcpus value.

[Filip Navara]

On Tue, Jul 14, 2009 at 10:38 AM, Jes Sorensen<address@hidden> wrote:
> On 07/09/2009 11:57 PM, Anthony Liguori wrote:
>>
>> These changes make my Ubuntu server guest very unhappy.  I get a bunch
>> of messages about "Not responding." on startup.
>>
>> If nothing else, maxcpus ==smp_cpus under QEMU because we don't do CPU
>> hotplug (and I don't think we should).
>
> Anthony,
>
> Sorry haven't gotten back to you earlier as I was on vacation. Are you
> saying the Ubuntu kernel doesn't like having more CPU entries in the
> ACPI table than it actually boots on?
>
> Does the same guest boot using an older KVM setup? Curious since it does
> have the larger CPU table in the DSDT.
>
> Cheers,
> Jes
>

BTW, many other guests complain when ACPI describes more processors
than actually present in machine. That's why I implemented the dynamic
DSDT generation in Bochs BIOS in the first place. One that comes to
mind is MacOS X, or the Darwin kernel respectively.

Best regards,
Filip Navara