[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <86802c440912242338q4a9adb03k8739d90042394d05@mail.gmail.com>
Date: Thu, 24 Dec 2009 23:38:51 -0800
From: Yinghai Lu <yinghai@...nel.org>
To: sboyce@...eyonder.co.uk
Cc: linux-kernel@...r.kernel.org
Subject: Re: All kernels after 2.6.32-git10 show only 1 CPU
On Wed, Dec 23, 2009 at 8:55 AM, Sid Boyce <sboyce@...eyonder.co.uk> wrote:
> On the 4P box, 2.6.32-git10 boots and shows 4 CPU's, 2.6.32-git12 boots
> and shows 1 CPU, 2.6.32-git15 to 2.6.33-rc1-git3 1 CPU and lots of oops,
> continues with something like "Sending NMI interrupts to CPU's",
> [udev] unexpectedly returned with status 0x0100
> [udev] failed while handling /devices/pci000:00 -----etc--- same for
> other devices.
> Unable to capture via serial console as USB doesn't come ready.
>
> On 2P laptop, up to 2.6.33-rc1 boots, 1 CPU and boot option "acpi=noirq"
> needed, without it boot hangs, I think from 2.6.32-git15.
> Building kernels, I have used the .config from previous kernel and
> "make oldconfig".
>
> # uname -r
> 2.6.32-git12-smp
> slipstream:~ # cat /proc/cpuinfo
> processor : 0
> vendor_id : AuthenticAMD
> cpu family : 16
> model : 4
> model name : AMD Phenom(tm) II X4 940 Processor
> stepping : 2
> cpu MHz : 3013.597
> cache size : 512 KB
> physical id : 0
> siblings : 1
> core id : 0
> cpu cores : 1
> apicid : 0
> initial apicid : 0
> fpu : yes
> fpu_exception : yes
> cpuid level : 5
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca
> cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
> pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc up rep_good nonstop_tsc
> pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm
> sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
> bogomips : 6027.18
> TLB size : 1024 4K pages
> clflush size : 64
> cache_alignment : 64
> address sizes : 48 bits physical, 48 bits virtual
> power management: ts ttp tm stc 100mhzsteps hwpstate
>
> # uname -r
> 2.6.32-git10-smp
>
> # cat /proc/cpuinfo
> processor : 0
> vendor_id : AuthenticAMD
> cpu family : 16
> model : 4
> model name : AMD Phenom(tm) II X4 940 Processor
> stepping : 2
> cpu MHz : 3013.774
> cache size : 512 KB
> physical id : 0
> siblings : 4
> core id : 0
> cpu cores : 4
> apicid : 0
> initial apicid : 0
> fpu : yes
> fpu_exception : yes
> cpuid level : 5
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
> fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good
> nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm
> extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
> bogomips : 6027.53
> TLB size : 1024 4K pages
> clflush size : 64
> cache_alignment : 64
> address sizes : 48 bits physical, 48 bits virtual
> power management: ts ttp tm stc 100mhzsteps hwpstate
>
> processor : 1
> vendor_id : AuthenticAMD
> cpu family : 16
> model : 4
> model name : AMD Phenom(tm) II X4 940 Processor
> stepping : 2
> cpu MHz : 3013.774
> cache size : 512 KB
> physical id : 0
> siblings : 4
> core id : 1
> cpu cores : 4
> apicid : 1
> initial apicid : 1
> fpu : yes
> fpu_exception : yes
> cpuid level : 5
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
> fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good
> nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm
> extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
> bogomips : 6027.27
> TLB size : 1024 4K pages
> clflush size : 64
> cache_alignment : 64
> address sizes : 48 bits physical, 48 bits virtual
> power management: ts ttp tm stc 100mhzsteps hwpstate
>
> etc., up to processor 4.
>
> On a 2P laptop
> ===============
> tindog:~ # uname -r
> 2.6.33-rc1-smp
>
> tindog:~ # cat /proc/cpuinfo
> processor : 0
> vendor_id : AuthenticAMD
> cpu family : 15
> model : 67
> model name : AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
> stepping : 3
> cpu MHz : 1000.000
> cache size : 1024 KB
> physical id : 0
> siblings : 1
> core id : 0
> cpu cores : 1
> apicid : 0
> initial apicid : 0
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca
> cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
> rdtscp lm 3dnowext 3dnow up rep_good pni cx16 lahf_lm cmp_legacy svm
> extapic cr8_legacy
> bogomips : 2009.33
> TLB size : 1024 4K pages
> clflush size : 64
> cache_alignment : 64
> address sizes : 40 bits physical, 48 bits virtual
> power management: ts fid vid ttp tm stc
>
> The .config for the 4P and 2.6.33-rc1-git3 attached.
Can you disable MAXSMP?
YH
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists