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SubjectRe: 3.2-rc2 freezes on boot for AMD K6 - bisected to commit bcb80e53877c2045d9e52f4a71372c3fe6501f6f
On 11/30/2011 10:24 AM, Larry Finger wrote:

> I have an ancient laptop with an AMD-K6 CPU that freezes on boot with
> 3.2-rc2. The problem was bisected to commit bcb80e53877c2.
>
> The cpuinfo for this box is:
>
>>> cpu.1: cpuinfo
> ----- /proc/cpuinfo -----
> processor : 0
> vendor_id : AuthenticAMD
> cpu family : 5
> model : 8
> model name : AMD-K6(tm) 3D processor
> stepping : 12
> cpu MHz : 428.804
> cache size : 64 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr cx8 pge mmx syscall 3dnow
> k6_mtrr up
> bogomips : 857.60
> clflush size : 32
> cache_alignment : 32
> address sizes : 32 bits physical, 32 bits virtual
> power management:
>
> ----- /proc/cpuinfo end -----
>
> This patch is quite simple, thus it appears that rdmsr() is OK, but that
> rdmsr_safe() is not.
>
> I am happy to provide any other info regarding this box.
>


Hi Larry,

Can you please try out the patch posted in
https://lkml.org/lkml/2011/11/28/178 ?

This patch will be available in mainline kernel from -rc4.
https://lkml.org/lkml/2011/11/28/457

--
Regards,
Srivatsa S. Bhat
IBM Linux Technology Center



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