[Xen-devel] cpu recognition

[Karl Rister <kmr@xxxxxxxxxx>]

I am seeing a weird anomaly where Xen is correctly recognizing the speed of 
the cpu's in the box but Linux in Domain-0 is not.  The cpu's are Intel Xeon 
704x (dual core 3GHz, either 7040 - 667 MHz FSB - or 7041 - 800 MHz FSB).  
When I boot on a baremetal 2.6.12 Linux kernel it correctly identifies the 
chip speed.  Has anyone seen this and is it a problem?

xm info:

system                 : Linux
host                   : ---
release                : 2.6.12-xen0-smp
version                : #1 SMP Mon Nov 28 13:59:13 CST 2005
machine                : x86_64
nr_cpus                : 16
nr_nodes               : 1
sockets_per_node       : 4
cores_per_socket       : 2
threads_per_core       : 2
cpu_mhz                : 3002
hw_caps                : 
bfebfbff:20100800:00000000:00000080:000065bd:00000000:0
0000001
memory                 : 16383
free_memory            : 133
xen_major              : 3
xen_minor              : 0
xen_extra              : -devel
xen_caps               : xen-3.0-x86_64 hvm-3.0-x86_64
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Mon Nov 28 11:22:02 2005 
8090:243265ade4045314ee4170436
cc704afa
cc_compiler            : gcc version 4.0.0 20050519 (Red Hat 4.0.0-8)
cc_compile_by          : root
cc_compile_domain      : ---
cc_compile_date        : Mon Nov 28 13:56:08 CST 2005

/proc/cpuinfo:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      :                    Genuine Intel(R) CPU 3.00GHz
stepping        : 8
cpu MHz         : 4222.844
cache size      : 2048 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm 
constant_tsc
 pni monitor ds_cpl est tm2 cid cx16 xtpr lahf_lm
bogomips        : 8388.60
clflush size    : 64
cache_alignment : 128
address sizes   : 40 bits physical, 48 bits virtual
power management:
</snip>



-- 
Karl Rister

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