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List:       freebsd-amd64
Subject:    Re: AMD64 on Xenon ?
From:       Mike Hunter <mhunter () ack ! Berkeley ! EDU>
Date:       2005-02-25 20:03:56
Message-ID: 20050225200356.GA29206 () ack ! Berkeley ! EDU
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On Feb 25, "Michael R. Wayne" wrote:

> I just powered up a dual Xenon system from one of our suppliers.
> It is acting a bit odd, Eventaully, I realized:
> 
> CPU: Intel(R) Xeon(TM) CPU 2.80GHz (2800.11-MHz K8-class CPU)
> Origin = "GenuineIntel"  Id = 0xf34  Stepping = 4
> 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=0x441d<SSE3,RSVD2>,MON,DS_CPL,CNTX-ID,<b14>>
> AMD Features=0x20000800<SYSCALL,LM>
> Hyperthreading: 2 logical CPUs
> 
> But note the last word on uname -a:
> FreeBSD test.x.com 5.3-RELEASE FreeBSD 5.3-RELEASE #0: Fri Nov  5 03:50:01 UTC 2004 \
> root@fanboy.samsco.home:/usr/obj/usr/src/sys/GENERIC  amd64 
> So, why would this run at all?  I was planning on reinstalling 
> anyway so it's not a huge deal but it seems pretty odd...

The "amd64" architecture should work just fine on Intel EM64 systems.  EM64 is
intel's codename for their knock-off implementation of AMD's 64 bit x86
extensions.

Mike
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