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 ...