From owner-freebsd-amd64@FreeBSD.ORG  Wed Feb 12 20:56:18 2014
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Date: Wed, 12 Feb 2014 14:56:09 -0600
From: "Matthew D. Fuller" <fullermd@over-yonder.net>
To: John Baldwin <jhb@freebsd.org>
Subject: Re: amd64/186061: FreeBSD 10 crashes as KVM guest on GNU/Linux on
 AMD family 10h CPUs
Message-ID: <20140212205609.GA2304@over-yonder.net>
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 <201402121423.48285.jhb@freebsd.org>
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Cc: Simon Matter <simon.matter@invoca.ch>, freebsd-amd64@freebsd.org
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On Wed, Feb 12, 2014 at 02:23:48PM -0500 I heard the voice of
John Baldwin, and lo! it spake thus:
> 
> Assuming you do have 10h CPUs, it would be nice to see what cpuid
> flags are set for your processors.

If it's any help,

CPU: AMD Phenom(tm) II X4 980 Processor (3712.47-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0x100f43  Family=0x10  Model=0x4  Stepping=3
  Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x802009<SSE3,MON,CX16,POPCNT>
  AMD Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow!>
  AMD Features2=0x837ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,SKINIT,WDT,NodeId>


Though I'd naively think it would make more sense to check the Family
directly rather than guessing from flags.  But my assumption that's
practical could be total hogwash...


-- 
Matthew Fuller     (MF4839)   |  fullermd@over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/
           On the Internet, nobody can hear you scream.