Is this reasonable ?

Erik Trulsson ertr1013 at student.uu.se
Tue Jun 26 10:12:43 UTC 2007


On Tue, Jun 26, 2007 at 10:42:32AM +0100, Tom Evans wrote:
> On Tue, 2007-06-26 at 11:12 +0200, Ollivier Robert wrote:
> > According to Tom Evans:
> > > iirc the Intel D820 isn't 64bit capable, so it would be unreasonable to
> > > run 7.0/amd64 on it ;)
> > 
> > Here is what is displayed at boot-time.  What should indicate it does
> > support EM64T (or not)?
> > 
> > CPU: Intel(R) Pentium(R) D CPU 2.80GHz (2793.09-MHz 686-class CPU)
> >   Origin = "GenuineIntel"  Id = 0xf47  Stepping = 7
> >   Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C
> > MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> >   Features2=0x641d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,CX16,<b14>>
> >   AMD Features=0x20100000<NX,LM>
> >   AMD Features2=0x1<LAHF>
> >   Cores per package: 2
> > 
> 
> My mistake, I thought the D820 didnt have EMT64 support - according to
> wikipedia it does. I'm still not sure what feature signifies EMT64(?)
> 
> My laptop, for example, doesnt:
> Copyright (c) 1992-2007 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>         The Regents of the University of California. All rights
> reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 7.0-CURRENT #1: Tue Jun  5 14:39:27 BST 2007
>     root at zoot:/usr/obj/usr/src/sys/ZOOT
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Genuine Intel(R) CPU           T2500  @ 2.00GHz (1995.02-MHz
> 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0x6e8  Stepping = 8
> 
> Features=0xbfe9fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,
> 	CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>   Features2=0xc1a9<SSE3,MON,VMX,EST,TM2,xTPR,PDCM>
>   AMD Features=0x100000<NX>
>   Cores per package: 2
> 
> But most of my servers do: 
> Copyright (c) 1992-2007 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>         The Regents of the University of California. All rights
> reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 6.2-RELEASE #11: Mon Jun 11 13:26:07 BST 2007
>     root at roley:/usr/obj/usr/src/sys/PE2950
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel(R) Xeon(R) CPU            5110  @ 1.60GHz (1597.65-MHz
> K8-class CPU)
>   Origin = "GenuineIntel"  Id = 0x6f6  Stepping = 6
> 
> 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=0x4e33d<SSE3,RSVD2,MON,DS_CPL,VMX,TM2,<b9>,CX16,<b14>,<b15>,<b18>>
>   AMD Features=0x20100800<SYSCALL,NX,LM>
>   AMD Features2=0x1<LAHF>
>   Cores per package: 2
> 
> Its either LAHF or LM imho.
> 

It is 'LM'  (short for 'Long Mode') which indicates that the CPU is capable
of running in 64-bit mode.




-- 
<Insert your favourite quote here.>
Erik Trulsson
ertr1013 at student.uu.se


More information about the freebsd-current mailing list