Messages in this thread | | | Date | Sat, 03 Dec 2011 14:43:30 -0600 | From | Larry Finger <> | Subject | Re: 3.2-rc2 freezes on boot for AMD K6 - bisected to commit bcb80e53877c2045d9e52f4a71372c3fe6501f6f |
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On 11/30/2011 01:09 AM, Larry Finger wrote: > On 11/29/2011 11:59 PM, Srivatsa S. Bhat wrote: >> 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 > > Srivatsa, > > Thanks for the reference. That patch does fix my problem. Too bad that the bad > commit was not in the subject of that other thread so that I could have found it > with Google.
Borislav,
I just updated mainline to 3.2-rc4, and that patch is not included. Please check with Ingo to see why it was not available. It is a real show stopper for old AMD CPUs.
Thanks,
Larry
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