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SubjectRe: [BUG] (regression) AMD k6-III/450 won't boot w/2.6.22-rc1
Date
From
Dave Jones wrote:
> On Wed, May 16, 2007 at 11:53:22AM -0400, Chuck Ebbert wrote:
> > Bob Tracy wrote:
> > > Jan Engelhardt wrote:
> > >>> On Tue, 15 May 2007 22:13:14 -0500 (CDT) Bob Tracy wrote:
> > >>>> The 2.6.22-rc1 boot panics early in amd_mcheck_init() with my k6-III/450.
> >
> > > Intel machine check architecture supported.
> > > general protection fault: 0000 [#1]
> > > PREEMPT
> > > Modules linked in:
> > > CPU: 0
> > > EIP: 0060:[<c01079f4>] Not tainted VLI
> > > EFLAGS: 00010286 (2.6.22-rc1 #1)
> > > EIP is at amd_mcheck_init+0x2b/0xc3
> > >
> >
> > rdmsr with ecx == 0x179 (Machine Check Global Capabilities Register)
> >
> > Probably K6 doesn't have that.
>
> sounds right. Intel style MCE capability was introduced with the Athlon
> on AMD systems iirc.
>
> > Caused by:
> >
> > [PATCH] i386: check capability
>
> Though this would imply that Bobs K6-3 is reporting that it does have
> that bit in its cpuid flags.
>
> Bob, can you send your /proc/cpuinfo and dmesg |grep CPU ?

/proc/cpuinfo sent in the first message in this thread (anticipated your
request :-)), but it's small enough to repeat:

processor : 0
vendor_id : AuthenticAMD
cpu family : 5
model : 9
model name : AMD-K6(tm) 3D+ Processor
stepping : 1
cpu MHz : 451.040
cache size : 256 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 mce cx8 pge mmx syscall 3dnow k6_mtrr
bogomips : 902.78
clflush size : 32

Here's the requested dmesg output (for 2.6.21):

Initializing CPU#0
CPU: After generic identify, caps: 008021bf 808029bf 00000000 00000000 00000000 00000000 00000000
CPU: L1 I Cache: 32K (32 bytes/line), D cache 32K (32 bytes/line)
CPU: L2 Cache: 256K (32 bytes/line)
CPU: After all inits, caps: 008021bf 808029bf 00000000 00000002 00000000 00000000 00000000
CPU: AMD-K6(tm) 3D+ Processor stepping 01
NVRM: CPU does not support the PAT, falling back to MTRRs.
--
-----------------------------------------------------------------------
Bob Tracy WTO + WIPO = DMCA? http://www.anti-dmca.org
rct@frus.com
-----------------------------------------------------------------------
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