2.6 kernels wrongly declare "fdiv_bug: no"

From: ZB
Date: Mon Dec 07 2009 - 21:01:41 EST


/proc/cpuinfo fdiv_bug says "no" in 2.6.32 and other 2.6 kernels,
but 2.4 kernels say "yes" as does the Intel utility

2.4.37:
Intel Pentium with F0 0F bug - workaround enabled.
CPU: Intel Pentium 75 - 200 stepping 01
Hmm, FPU with FDIV bug.
Checking 'hlt' instruction... OK.

processor : 0
vendor_id : GenuineIntel
cpu family : 5
model : 2
model name : Pentium 75 - 200
stepping : 1
cpu MHz : 90.205
fdiv_bug : yes
hlt_bug : no
f00f_bug : yes
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8
bogomips : 179.81


2.6.32:
Intel Pentium with F0 0F bug - workaround enabled.
[blank line here]
CPU: Intel Pentium 75 - 200 stepping 01
Checking 'hlt' instruction... OK.

processor : 0
vendor_id : GenuineIntel
cpu family : 5
model : 2
model name : Pentium 75 - 200
stepping : 1
cpu MHz : 90.199
cache size : 0 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : yes
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8
bogomips : 180.91
clflush size : 32
cache_alignment : 32
address sizes : 32 bits physical, 32 bits virtual
power management:
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