How to tell whether CPU supports x64?

[Ilya Kazakevich]

Afaik there should be "LM" in "AMD features" output. Even for Intel. Grep
your dmesg.boot for LM.





On Fri, Mar 18, 2011 at 12:33 AM, Tait <freebsd at t41t.com> wrote:

> I have a remote server, and I'd like to know if it will support
> 64-bit instructions. Is there some way I can tell? It's running 32-bit
> FreeBSD right now.
>
> >From dmesg.boot:
>        Timecounter "i8254" frequency 1193182 Hz quality 0
>        CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2387.76-MHz 686-class CPU)
>        Origin = "GenuineIntel"  Id = 0xf29  Stepping = 9
>
>  Features=0xbfebfbff<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,HTT,TM,PBE>
>        Features2=0x4400<CNTX-ID,<b14>>
>        Logical CPUs per core: 2
>        real memory  = 1073676288 (1023 MB)
>        avail memory = 1041502208 (993 MB)
>        ACPI APIC Table: <DELL   PE1750  >
>        FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>        cpu0 (BSP): APIC ID:  0
>        cpu1 (AP): APIC ID:  1
>
> I've had no luck trying to search for the id/stepping. Would the
> feature list show x64 support?
>
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