amd64/186061: FreeBSD 10 crashes as KVM guest on GNU/Linux on AMD family 10h CPUs

Matthew D. Fuller fullermd at
Wed Feb 12 20:56:18 UTC 2014

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
  AMD Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow!>

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 at
Systems/Network Administrator |
           On the Internet, nobody can hear you scream.

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