Re: [PATCH] x86, amd: Re-enable CPU topology extensions in case BIOShas disabled it

[Ingo Molnar]

* Andreas Herrmann <andreas.herrmann3@xxxxxxx> wrote:

> 
> For detection of thread siblings we are relying on the topology
> extension CPUID leafs. Thus we have to re-enable it in case BIOS tries
> to hide the correpsonding CPUID feature flag.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Andreas Herrmann <andreas.herrmann3@xxxxxxx>

This changelog is missing some key information:

 - how did you find the bug - did you see some actual badness?

 - what practical effect (if any) did you see from this patch?

 - what practical effect (if any) do you expect others to see from this patch?

This kind of information helps us prioritize bugfixes and helps 
us determine whether a fix requires a -stable backport.

Thanks,

    Ingo
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