Re: [PATCH] x86: add apic probe for genapic 64bit v2

From: Suresh Siddha
Date: Tue Jul 22 2008 - 15:17:21 EST

On Tue, Jul 22, 2008 at 11:40:13AM -0700, Yinghai Lu wrote:
> could be apic mode is set to phys flat mode by BIOS.
> get
> APIC error (0x40)...

Does this happen while sending IPI's? AP bringup should be same
irrespective of the genapic mode we select here.

> that is the reason for introducing max_phys_apicid.

We may need a workaround if it is some cpu/platform specific issue. But we
need to understand the actual issue and document it properly, so that
it doesn't break in the future.

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