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-   -   wtf.. is it a i386 or x86_64 (http://www.linuxquestions.org/questions/linux-hardware-18/wtf-is-it-a-i386-or-x86_64-a-923735/)

threaderslash 01-14-2012 06:36 AM

wtf.. is it a i386 or x86_64
 
Hi Folks,

I am running crazy about the kind of processor I have here. :scratch:

Here is what I got - short output:

Code:

# lspci -v

00:00.0 Host bridge: Advanced Micro Devices [AMD] RS880 Host Bridge
        Subsystem: Acer Incorporated [ALI] Device 036e
        Flags: bus master, 66MHz, medium devsel, latency 0

00:04.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 0) (prog-if 00 [Normal decode])
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit-

00:13.0 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller (prog-if 10 [OHCI])
        Subsystem: Acer Incorporated [ALI] Device 036e
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 18
        Memory at 92305000 (32-bit, non-prefetchable) [size=4K]
        Kernel driver in use: ohci_hcd

When I purchased this laptop, the sales person told me to have on it a 32bits AMD processor. :mad: Recently I installed a FC16 64bits and it did not complained about, and it is running smoothly. :cool: But on the other hand the ATI shows 32-bit.

So, if the it is a 64bits, why the sales person told it to be a 32bits. On the other hand, if it is a 32bits, how did it accepted installing the 64bits FC16?

All comments are highly appreciated and welcome! :D

Thor_2.0 01-14-2012 06:43 AM

Hi!

Try to look at the output of lshw, that's where the dataz of the CPU is found...

Dare I think it possible to have a 64-bit CPU with some 32-bit stuff around it?

Following this interesiting thread, thanks!

Thor

brianL 01-14-2012 06:50 AM

Run:
Code:

cat /proc/cpuinfo
If you see lm in the flags, it's 64-bit.

threaderslash 01-14-2012 08:16 AM

Hi BrianL,

I see one kind of lm in the flags: lahf_lm .

Here is what I got as output:

Code:

[root@gold ~]# cat /proc/cpuinfo
processor        : 0
vendor_id        : AuthenticAMD
cpu family        : 16
model                : 6
model name        : AMD V120 Processor
stepping        : 3
cpu MHz                : 800.000
cache size        : 512 KB
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 mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc up rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm svm extapic cr8_legacy abm sse4a 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save
bogomips        : 4388.83
TLB size        : 1024 4K pages
clflush size        : 64
cache_alignment        : 64
address sizes        : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate

So... it is a x86_64. Right? It is a little confusing indeed. If a sales person come to you and try to sell you a i386 telling it to be a x86_64, would be a little bit snick, but on the way around really makes no sense at all.

Thanks for the feedback!

brianL 01-14-2012 08:20 AM

Quote:

Originally Posted by threaderslash (Post 4574340)
Hi BrianL,

I see one kind of lm in the flags: lahf_lm .

Here is what I got as output:

Code:

[root@gold ~]# cat /proc/cpuinfo
processor        : 0
vendor_id        : AuthenticAMD
cpu family        : 16
model                : 6
model name        : AMD V120 Processor
stepping        : 3
cpu MHz                : 800.000
cache size        : 512 KB
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 mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc up rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm svm extapic cr8_legacy abm sse4a 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save
bogomips        : 4388.83
TLB size        : 1024 4K pages
clflush size        : 64
cache_alignment        : 64
address sizes        : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate

So... it is a x86_64. Right? It is a little confusing indeed. If a sales person come to you and try to sell you a i386 telling it to be a x86_64, would be a little bit snick, but on the way around really makes no sense at all.

Thanks for the feedback!

You've got lm in there, too. So you can run the x86_64 versions of any distro.

alan_ri 01-14-2012 09:16 AM

Well, I say Google is a lovely thing;
Quote:

Processor AMD V Series Processors for Notebook PCs
Model V120
OPN Tray VMV120SGR12GM
OPN PIB N/A
Operating Mode 32 Bit Yes
Operating Mode 64 Bit Yes
Frequency (MHz) 2200
System Bus Speed (MHz) 3200
Wattage 25 W
L2 Cache Size 512
Process Technology 45nm SOI
Package/Infrastructure Socket S1
AMD Virtualization Technology Yes
http://slinfra.com/amd-v-series-v120...sor-review/36/
http://www.notebookcheck.net/AMD-V-S...r.33940.0.html
http://en.wikipedia.org/wiki/X86-64


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