Re: x2apic boot failure on recent sandy bridge system

[Yinghai Lu]

On Sat, Dec 10, 2011 at 2:58 PM, Berck E. Nash <flyboy@xxxxxxxxx> wrote:
> On 12/10/2011 01:17 PM, Yinghai Lu wrote:
>> your bios should not enable x2apic in this case.
>
> I am, in fact, able to disable x2apic in the BIOS and it works fine.  I
> was just under the impression that x2apic should be available and should
> work?  Is this wrong?  If so, then there's no kernel bug, and I just
> misunderstood.

it's not kernel bug.

BIOS need to provide DMAR table, so kernel could enable
intr-rempapping, and x2apic need intr-remap.

Thanks

Yinghai
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