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Date: Thu, 24 Dec 2009 23:38:51 -0800
Message-ID: <86802c440912242338q4a9adb03k8739d90042394d05@mail.gmail.com>
Subject: Re: All kernels after 2.6.32-git10 show only 1 CPU
From: Yinghai Lu <yinghai@kernel.org>
To: sboyce@blueyonder.co.uk
Cc: linux-kernel@vger.kernel.org
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On Wed, Dec 23, 2009 at 8:55 AM, Sid Boyce <sboyce@blueyonder.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
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