* kernel: padlock: VIA PadLock not detected.
@ 2006-05-23 16:46 markus reichelt
2006-05-23 19:41 ` Adam Jones
0 siblings, 1 reply; 2+ messages in thread
From: markus reichelt @ 2006-05-23 16:46 UTC (permalink / raw)
To: linux-kernel
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Hi,
I get the following message on a Nehemiah system. Any ideas about
that?
kernel 2.6.16.17 (I tried other stable versions too)
CONFIG_CRYPTO_DEV_PADLOCK=y
CONFIG_CRYPTO_DEV_PADLOCK_AES=y
kernel: CPU0: Centaur VIA Nehemiah stepping 01
kernel: padlock: VIA PadLock not detected
cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 9
model name : VIA Nehemiah
stepping : 1
cpu MHz : 999.663
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 de tsc msr cx8 mtrr pge cmov mmx fxsr sse
fxsr_opt
bogomips : 2002.28
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left blank, right bald
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: kernel: padlock: VIA PadLock not detected.
2006-05-23 16:46 kernel: padlock: VIA PadLock not detected markus reichelt
@ 2006-05-23 19:41 ` Adam Jones
0 siblings, 0 replies; 2+ messages in thread
From: Adam Jones @ 2006-05-23 19:41 UTC (permalink / raw)
To: linux-kernel
In a futile gesture against entropy, markus reichelt wrote:
> I get the following message on a Nehemiah system. Any ideas about
> that?
> kernel: CPU0: Centaur VIA Nehemiah stepping 01
> kernel: padlock: VIA PadLock not detected
>
> cat /proc/cpuinfo
[...]
> flags : fpu de tsc msr cx8 mtrr pge cmov mmx fxsr sse
> fxsr_opt
I believe the padlock support was only added in later steppings of the
Nehemiah core. My Nehemiah system here supports it:
cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 9
model name : VIA Nehemiah
stepping : 8
cpu MHz : 997.000
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 sep mtrr pge cmov pat mmx fxsr sse rng rng_en ace ace_en
bogomips : 2007.25
(Note the rng* and ace* flags)
According to a VIA press release here:
http://www.linuxdevices.com/sponsors/SP2782600871-NS4520757633.html
only stepping 8 or later CPUs support these instructions.
--
Adam Jones (adam@yggdrasl.demon.co.uk)(http://www.yggdrasl.demon.co.uk/)
.oO("It's not like it's sigfile fodder or anything..." )
PGP public key: http://www.yggdrasl.demon.co.uk/pubkey.asc
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