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DateSun, 24 Feb 2008 08:50:39 +0100
FromIngo Molnar <>
SubjectRe: [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box v2

* Yinghai Lu <Yinghai.Lu@Sun.COM> wrote:

> quad core 8 socket system will have apic id lifting.the apic id range
> could be [4, 0x23]. and apic_is_clustered_box will think that need to
> three clusters and that is large than 2. So it is treated as
> clustered_box.
>
> and will get
>
> Marking TSC unstable due to TSCs unsynchronized
>
> even the CPUs have X86_FEATURE_CONSTANT_TSC set.
>
> this patch will check if the cpu is from AMD.

thanks Yinghai, applied.

Ingo


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