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Old 04-26-2011, 12:48 PM
Steve Clark
 
Default RHEL 6/CentOS

On 04/26/2011 08:43 AM, Brunner, Brian T. wrote:

centos-bounces@centos.org wrote:


Hello,

Anybody know the reason RedHat decided not to support the
VIA Eden Processor?



Possibly ... Does that processor have PAE? The non-PAE kernel was
dropped, the current 'normal' kernel requires a PAE-capable processor.




UNSUPPORTED HARDWARE DEVICE: Centaur Processor
------------[ cut here ]------------





Appears to:

cat /proc/cpuinfo

processor****** : 0

vendor_id****** : CentaurHauls

cpu family***** : 6

model********** : 13

model name***** : VIA Eden Processor* 500MHz

stepping******* : 0

cpu MHz******** : 498.788

cache size***** : 128 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 pae mce cx8 apic sep mtrr
pge cmov pat

clflush acpi mmx fxsr sse sse2 tm nx up pni est tm2 xtpr rng rng_en
ace ace_en a

ce2 ace2_en phe phe_en pmm pmm_en

bogomips******* : 997.57

clflush size*** : 64

cache_alignment : 64

address sizes** : 36 bits physical, 32 bits virtual

power management:



--

Stephen*Clark

NetWolves

Sr.*Software*Engineer*III

Phone:*813-579-3200

Fax:*813-882-0209

Email:*steve.clark@netwolves.com

http://www.netwolves.com




_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 04-26-2011, 01:55 PM
Johnny Hughes
 
Default RHEL 6/CentOS

On 04/26/2011 07:48 AM, Steve Clark wrote:
> On 04/26/2011 08:43 AM, Brunner, Brian T. wrote:
>> centos-bounces@centos.org wrote:
>>> Hello,
>>>
>>> Anybody know the reason RedHat decided not to support the
>>> VIA Eden Processor?
>> Possibly ... Does that processor have PAE? The non-PAE kernel was
>> dropped, the current 'normal' kernel requires a PAE-capable processor.
>>
>>
>>> UNSUPPORTED HARDWARE DEVICE: Centaur Processor
>>> ------------[ cut here ]------------
> Appears to:
> cat /proc/cpuinfo
> processor : 0
> vendor_id : CentaurHauls
> cpu family : 6
> model : 13
> model name : VIA Eden Processor 500MHz
> stepping : 0
> cpu MHz : 498.788
> cache size : 128 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 pae mce cx8 apic sep mtrr pge
> cmov pat
> clflush acpi mmx fxsr sse sse2 tm nx up pni est tm2 xtpr rng rng_en ace
> ace_en a
> ce2 ace2_en phe phe_en pmm pmm_en
> bogomips : 997.57
> clflush size : 64
> cache_alignment : 64
> address sizes : 36 bits physical, 32 bits virtual
> power management:


My understanding is that this CPU is not even completely i686 compatible
... does CentOS-5 even work with that?

I thought that VIA Eden required i586 kernel and i386 or i586 glibc ...

(this may be a newer version than the one I tested 4-5 years ago)

_______________________________________________
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CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 04-26-2011, 03:02 PM
Steve Clark
 
Default RHEL 6/CentOS

On 04/26/2011 09:55 AM, Johnny Hughes wrote:

On 04/26/2011 07:48 AM, Steve Clark wrote:


On 04/26/2011 08:43 AM, Brunner, Brian T. wrote:


centos-bounces@centos.org wrote:


Hello,

Anybody know the reason RedHat decided not to support the
VIA Eden Processor?


Possibly ... Does that processor have PAE? The non-PAE kernel was
dropped, the current 'normal' kernel requires a PAE-capable processor.




UNSUPPORTED HARDWARE DEVICE: Centaur Processor
------------[ cut here ]------------



Appears to:
cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 13
model name : VIA Eden Processor 500MHz
stepping : 0
cpu MHz : 498.788
cache size : 128 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 pae mce cx8 apic sep mtrr pge
cmov pat
clflush acpi mmx fxsr sse sse2 tm nx up pni est tm2 xtpr rng rng_en ace
ace_en a
ce2 ace2_en phe phe_en pmm pmm_en
bogomips : 997.57
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 32 bits virtual
power management:




My understanding is that this CPU is not even completely i686 compatible
... does CentOS-5 even work with that?

I thought that VIA Eden required i586 kernel and i386 or i586 glibc ...

(this may be a newer version than the one I tested 4-5 years ago)



It has been running 5.x just fine. It also runs the ayplus kernel
fine too:



uname -a

Linux 2.6.32-71.24.1.el6.centos.ayplus.1.i686 #1 SMP Fri Apr 8
17:23:21 PDT 2011 i686 i686 i386 GNU/Linux



cat /proc/cpuinfo

processor****** : 0

vendor_id****** : CentaurHauls

cpu family***** : 6

model********** :
13************************************************ *****

model name***** : VIA Eden Processor*
500MHz*****************************

stepping******* :
0************************************************* *****

cpu MHz******** :
498.783******************************************* *****

cache size***** : 128
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 pae mce cx8 apic sep mtrr
pge cmov pat

clflush acpi mmx fxsr sse sse2 tm nx up pni est tm2 xtpr rng rng_en
ace ace_en a

ce2 ace2_en phe phe_en pmm
pmm_en****************************************

bogomips******* :
997.56******************************************** *****

clflush size*** :
64************************************************ *****

cache_alignment :
64************************************************ *****

address sizes** : 36 bits physical, 32 bits
virtual**********************

power management:









--

Stephen*Clark

NetWolves

Sr.*Software*Engineer*III

Phone:*813-579-3200

Fax:*813-882-0209

Email:*steve.clark@netwolves.com

http://www.netwolves.com




_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 04-26-2011, 03:42 PM
Akemi Yagi
 
Default RHEL 6/CentOS

On Tue, Apr 26, 2011 at 5:24 AM, Steve Clark <sclark@netwolves.com> wrote:

> Anybody know the reason RedHat decided not to support the
> VIA Eden Processor?
(snip)
> I traced it down to this code, which is not in the standard kernel.org
> kernel-2.6.32.36:
> from kernel-2.6.32.36
> static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
> {
> *** switch (c->x86) {
>
>
> from 2.6.32-71.24.1.el6.ayplus
> arch/x86/kernel/cpu/centaur.c
>
> static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
> {
> ******* mark_hardware_unsupported("Centaur Processor");** <<<<<<<<<<
> ******* switch (c->x86) {

Chances are you will not get a definitive answer from the CentOS
people. So, you'd need to ask those who actually added the code.
Question is whether this was done by Fedora or by RHEL devs.

Akemi
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Old 04-26-2011, 06:16 PM
"Brunner, Brian T."
 
Default RHEL 6/CentOS

centos-bounces@centos.org wrote:
> On Tue, Apr 26, 2011 at 5:24 AM, Steve Clark
> <sclark@netwolves.com> wrote:
>
>> Anybody know the reason RedHat decided not to support the
>> VIA Eden Processor?
> (snip)
>> I traced it down to this code, which is not in the standard
>> kernel.org kernel-2.6.32.36: from kernel-2.6.32.36
>> static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c) {
>> *** switch (c->x86) {
>>
>>
>> from 2.6.32-71.24.1.el6.ayplus
>> arch/x86/kernel/cpu/centaur.c
>>
>> static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c) {
>> ******* mark_hardware_unsupported("Centaur Processor");** <<<<<<<<<<
>> ******* switch (c->x86) {
>
> Chances are you will not get a definitive answer from the CentOS
> people. So, you'd need to ask those who actually added the code.
> Question is whether this was done by Fedora or by RHEL devs.
>
> Akemi <<<<<===== note: CentOS person.

Can you not that line and re-compile the kernel?
CentOS puts out a centosplus kernel based on the original plus good ideas.
If that line of code is not central to preventing kernel panics, nop it out and run with it.
Tell the CeontOSPlus people whether it works.

//me <<<<<=== Note: NOT a CentOS person.

Insert spiffy .sig here:
Life is complex: it has both real and imaginary parts.

//me
************************************************** *****************
This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom
they are addressed. If you have received this email in error please
notify the system manager. This footnote also confirms that this
email message has been swept for the presence of computer viruses.
www.Hubbell.com - Hubbell Incorporated**

_______________________________________________
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Old 05-10-2011, 10:42 AM
Steve Clark
 
Default RHEL 6/CentOS

On 04/26/2011 08:24 AM, Steve Clark wrote:


Hello,



Anybody know the reason RedHat decided not to support the

VIA Eden Processor?



cat /proc/cpuinfo

processor****** : 0

vendor_id****** : CentaurHauls

cpu family***** : 6

model********** : 13

model name***** : VIA Eden Processor* 500MHz



I am testing, (using ayplus kernel) and get the following during
bootup:

Linux version 2.6.32-71.24.1.el6.centos.ayplus.1.i686
(build@6beta32) (gcc versi

on 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC) ) #1 SMP Fri Apr 8
17:23:21 PDT 2011

KERNEL supported cpus:

* Intel GenuineIntel

* AMD AuthenticAMD

* NSC Geode by NSC

* Cyrix CyrixInstead

* Centaur CentaurHauls

* Transmeta GenuineTMx86

* Transmeta TransmetaCPU

* UMC UMC UMC UMC

UNSUPPORTED HARDWARE DEVICE: Centaur Processor

------------[ cut here ]------------

WARNING: at kernel/unsupported.c:13
mark_hardware_unsupported+0x37/0x40() (Not t

ainted)

Your hardware is unsupported.* Please do not report bugs,
panics, oopses, etc.,

on this hardware.

Modules linked in:

Pid: 0, comm: swapper Not tainted
2.6.32-71.24.1.el6.centos.ayplus.1.i686 #1

Call Trace:

*[<c0450201>] ? warn_slowpath_common+0x81/0xc0

*[<c0477e67>] ? mark_hardware_unsupported+0x37/0x40

*[<c0477e67>] ? mark_hardware_unsupported+0x37/0x40

*[<c0450293>] ? warn_slowpath_fmt_taint+0x33/0x40

*[<c0477e67>] ? mark_hardware_unsupported+0x37/0x40

*[<c08056eb>] ? early_init_centaur+0xd/0x2d

*[<c0a49835>] ? early_cpu_init+0x11a/0x13e

*[<c0a453b3>] ? setup_arch+0x38/0xb90

*[<c0450d3e>] ? vprintk+0x1ae/0x490

*[<c080ba2a>] ? printk+0x17/0x1d

*[<c0a5a4ee>] ? cgroup_init_subsys+0xcf/0xdb

*[<c0a406da>] ? start_kernel+0xca/0x3a4

---[ end trace a7919e7f17c0a725 ]---

Disabling lock debugging due to kernel taint







I traced it down to this code, which is not in the standard
kernel.org kernel-2.6.32.36:

from kernel-2.6.32.36

static void __cpuinit
early_init_centaur(struct cpuinfo_x86 *c)

{

*** switch (c->x86) {





from 2.6.32-71.24.1.el6.ayplus

arch/x86/kernel/cpu/centaur.c



static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)

{

******* mark_hardware_unsupported("Centaur Processor");**
<<<<<<<<<<

******* switch (c->x86) {











Thanks,








FYI.

Replying to my own E-Mail after running

2.6.32-71.24.1.el6 from SL. I can report
that I have

been having lockups (hangs) on three different via centaur
processor boxes.

The hangs require power cycling the boxes.





--

Stephen*Clark

NetWolves

Sr.*Software*Engineer*III

Phone:*813-579-3200

Fax:*813-882-0209

Email:*steve.clark@netwolves.com

http://www.netwolves.com




_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 05-10-2011, 12:43 PM
Kevin K
 
Default RHEL 6/CentOS

If I had to guess, it would be that the OS is considered an "enterprise" OS, and that the CPU is too low end, now, to be considered that. It is kind of low end now for even personal use.

Not that people only use the OS for high end server hardware

At work, we still have to support 500MHz Pentium IIIs with 128MB of RAM. Hopefully that requirement will be dropped before we migrate to 6. We had to make kernel modifications to even get the PCMCIA support to work on it.
_______________________________________________
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CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 05-11-2011, 09:46 AM
Johnny Hughes
 
Default RHEL 6/CentOS

On 05/10/2011 05:42 AM, Steve Clark wrote:
> On 04/26/2011 08:24 AM, Steve Clark wrote:
>> Hello,
>>
>> Anybody know the reason RedHat decided not to support the
>> VIA Eden Processor?
>>
>> cat /proc/cpuinfo
>> processor : 0
>> vendor_id : CentaurHauls
>> cpu family : 6
>> model : 13
>> model name : VIA Eden Processor 500MHz
>>
>> I am testing, (using ayplus kernel) and get the following during bootup:
>> Linux version 2.6.32-71.24.1.el6.centos.ayplus.1.i686 (build@6beta32)
>> (gcc versi
>> on 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC) ) #1 SMP Fri Apr 8 17:23:21
>> PDT 2011
>> KERNEL supported cpus:
>> Intel GenuineIntel
>> AMD AuthenticAMD
>> NSC Geode by NSC
>> Cyrix CyrixInstead
>> Centaur CentaurHauls
>> Transmeta GenuineTMx86
>> Transmeta TransmetaCPU
>> UMC UMC UMC UMC
>> UNSUPPORTED HARDWARE DEVICE: Centaur Processor
>> ------------[ cut here ]------------
>> WARNING: at kernel/unsupported.c:13
>> mark_hardware_unsupported+0x37/0x40() (Not t
>> ainted)
>> Your hardware is unsupported. Please do not report bugs, panics,
>> oopses, etc.,
>> on this hardware.
>> Modules linked in:
>> Pid: 0, comm: swapper Not tainted
>> 2.6.32-71.24.1.el6.centos.ayplus.1.i686 #1
>> Call Trace:
>> [<c0450201>] ? warn_slowpath_common+0x81/0xc0
>> [<c0477e67>] ? mark_hardware_unsupported+0x37/0x40
>> [<c0477e67>] ? mark_hardware_unsupported+0x37/0x40
>> [<c0450293>] ? warn_slowpath_fmt_taint+0x33/0x40
>> [<c0477e67>] ? mark_hardware_unsupported+0x37/0x40
>> [<c08056eb>] ? early_init_centaur+0xd/0x2d
>> [<c0a49835>] ? early_cpu_init+0x11a/0x13e
>> [<c0a453b3>] ? setup_arch+0x38/0xb90
>> [<c0450d3e>] ? vprintk+0x1ae/0x490
>> [<c080ba2a>] ? printk+0x17/0x1d
>> [<c0a5a4ee>] ? cgroup_init_subsys+0xcf/0xdb
>> [<c0a406da>] ? start_kernel+0xca/0x3a4
>> ---[ end trace a7919e7f17c0a725 ]---
>> Disabling lock debugging due to kernel taint
>>
>>
>>
>> I traced it down to this code, which is not in the standard kernel.org
>> kernel-2.6.32.36:
>> from kernel-2.6.32.36
>> static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
>> {
>> switch (c->x86) {
>>
>>
>> from 2.6.32-71.24.1.el6.ayplus
>> arch/x86/kernel/cpu/centaur.c
>>
>> static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
>> {
>> mark_hardware_unsupported("Centaur Processor"); <<<<<<<<<<
>> switch (c->x86) {
>>
>>
>>
>>
>>
>> Thanks,
>>
>>
>>
> FYI.
> Replying to my own E-Mail after running
> 2.6.32-71.24.1.el6 from SL. I can report that I have
> been having lockups (hangs) on three different via centaur processor boxes.
> The hangs require power cycling the boxes.

If you take a look on google for "CentaurHauls i686" you will see that
this CPU/chipset SAYS it fully supports i686 but it really does not.
All of EL6 is i686 and not i586 (which CentaurHauls really fully supports).

I think you are going to have issues with this CPU and EL6 forever.
EL5.x should likely be used with this CPU ...

_______________________________________________
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Old 05-11-2011, 11:03 AM
"Brunner, Brian T."
 
Default RHEL 6/CentOS

> If you take a look on google for "CentaurHauls i686" you will see that
> this CPU/chipset SAYS it fully supports i686 but it really does not.
> All of EL6 is i686 and not i586 (which CentaurHauls really
> fully supports).
>
> I think you are going to have issues with this CPU and EL6 forever.
> EL5.x should likely be used with this CPU ...

It is hoped (by a few posters on this list) that the 6.x centosplus
kernel will be 586-aware and 586-compatible.


Insert spiffy .sig here:
Life is complex: it has both real and imaginary parts.

//me
************************************************** *****************
This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom
they are addressed. If you have received this email in error please
notify the system manager. This footnote also confirms that this
email message has been swept for the presence of computer viruses.
www.Hubbell.com - Hubbell Incorporated**

_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 05-11-2011, 11:09 AM
Steve Clark
 
Default RHEL 6/CentOS

On 05/11/2011 05:46 AM, Johnny Hughes wrote:

On 05/10/2011 05:42 AM, Steve Clark wrote:


On 04/26/2011 08:24 AM, Steve Clark wrote:


Hello,

Anybody know the reason RedHat decided not to support the
VIA Eden Processor?

cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 13
model name : VIA Eden Processor 500MHz

I am testing, (using ayplus kernel) and get the following during bootup:
Linux version 2.6.32-71.24.1.el6.centos.ayplus.1.i686 (build@6beta32)
(gcc versi
on 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC) ) #1 SMP Fri Apr 8 17:23:21
PDT 2011
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
NSC Geode by NSC
Cyrix CyrixInstead
Centaur CentaurHauls
Transmeta GenuineTMx86
Transmeta TransmetaCPU
UMC UMC UMC UMC
UNSUPPORTED HARDWARE DEVICE: Centaur Processor
------------[ cut here ]------------
WARNING: at kernel/unsupported.c:13
mark_hardware_unsupported+0x37/0x40() (Not t
ainted)
Your hardware is unsupported. Please do not report bugs, panics,
oopses, etc.,
on this hardware.
Modules linked in:
Pid: 0, comm: swapper Not tainted
2.6.32-71.24.1.el6.centos.ayplus.1.i686 #1
Call Trace:
[<c0450201>] ? warn_slowpath_common+0x81/0xc0
[<c0477e67>] ? mark_hardware_unsupported+0x37/0x40
[<c0477e67>] ? mark_hardware_unsupported+0x37/0x40
[<c0450293>] ? warn_slowpath_fmt_taint+0x33/0x40
[<c0477e67>] ? mark_hardware_unsupported+0x37/0x40
[<c08056eb>] ? early_init_centaur+0xd/0x2d
[<c0a49835>] ? early_cpu_init+0x11a/0x13e
[<c0a453b3>] ? setup_arch+0x38/0xb90
[<c0450d3e>] ? vprintk+0x1ae/0x490
[<c080ba2a>] ? printk+0x17/0x1d
[<c0a5a4ee>] ? cgroup_init_subsys+0xcf/0xdb
[<c0a406da>] ? start_kernel+0xca/0x3a4
---[ end trace a7919e7f17c0a725 ]---
Disabling lock debugging due to kernel taint



I traced it down to this code, which is not in the standard kernel.org
kernel-2.6.32.36:
from kernel-2.6.32.36
static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
{
switch (c->x86) {


from 2.6.32-71.24.1.el6.ayplus
arch/x86/kernel/cpu/centaur.c

static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
{
mark_hardware_unsupported("Centaur Processor"); <<<<<<<<<<
switch (c->x86) {





Thanks,





FYI.
Replying to my own E-Mail after running
2.6.32-71.24.1.el6 from SL. I can report that I have
been having lockups (hangs) on three different via centaur processor boxes.
The hangs require power cycling the boxes.



If you take a look on google for "CentaurHauls i686" you will see that
this CPU/chipset SAYS it fully supports i686 but it really does not.
All of EL6 is i686 and not i586 (which CentaurHauls really fully supports).

I think you are going to have issues with this CPU and EL6 forever.
EL5.x should likely be used with this CPU ...





Thanks for the feedback.



*I guess the only thing I can say is at the start of the kernel boot
it says:

KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
NSC Geode by NSC
Cyrix CyrixInstead
Centaur CentaurHauls <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< <
Transmeta GenuineTMx86
Transmeta TransmetaCPU
UMC UMC UMC UMC


Which implies to me that it should work. I have booted up 3 boxes
using acpi=off to see

if that makes any difference. So far they have been up a couple of
days, but I need them to

be up at least a week to have any faith that acpi=off makes any
difference.





--

Stephen*Clark

NetWolves

Sr.*Software*Engineer*III

Phone:*813-579-3200

Fax:*813-882-0209

Email:*steve.clark@netwolves.com

http://www.netwolves.com




_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 

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