[CentOS] RHEL 6/CentOS

[Johnny Hughes]

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 at 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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