CPU name for "pure" i386 missing

From: Cesar Eduardo Barros (cesarb@nitnet.com.br)
Date: Mon Feb 26 2001 - 19:49:00 EST

Looks like every time the CPU detection code is rewritten, the printing of the
CPU name for "pure" (i.e. "original") 386s suffer. Last time, the "\n" after
the "CPU: 386" line was missing.

This time it's worse. It's tripping the "unknown CPU" code path:

CPU: Before vendor init, caps: 00000000 00000000 00000000, vendor = 255
CPU: ff/00

and looking at /proc/cpuinfo:

processor : 0
vendor_id : unknown
cpu family : 3
model : 0
model name : ff/00
stepping : unknown
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : no
fpu_exception : no
cpuid level : -1
wp : no
flags :
bogomips : 3.62

Shouldn't the code be supposed to figure that, since there is no cpuid, it
should be a 386 or an early 486?

I think that table_lookup_model in arch/i386/kernel/setup.c should code a
vendor of 255 as a special case and return "386" or something like that instead
of bailing out. If everybody agrees, I'll make a patch for Linus.

Cesar Eduardo Barros
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This archive was generated by hypermail 2b29 : Wed Feb 28 2001 - 21:00:12 EST