Virtualbox reports AMD-V non-operational when loading 64-bit Guest

[Jerry Feldman]

My system is a 64-bit AMD Opteron Quad Core
flflags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt
pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc
extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic
cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs

I have double checked and Processor Assisted Virtualization is enabled
in the BIOS this morning.

When I run Vbox 3.1.6, and try to run one of the 64-bit guest OS's that
I had used previously under and older version of Virtualbox, I get a
popup from Virtualbox that the VT-x/AMD-V is not operational. Since I
created these VDIs on this machine, I do know my system does support
processor assisted virtualization. I do plan on converting the VDIs to
KVM img or qcow format and testing KVM/QEMU.

I am currently running Fedora 12 with the 2.6.32.10-90.fc12.x86_64
kernel. I recently reinstalled Fedora 12 from scratch as a result of the
pvcreate issues. My motherboard is a Tyan Thunder n6650w.  One other
change I made is that I noticed in the logwatch that ECC was not
enabled, so I enabled ECC.

I installed QEMU + KVM, and it runs a 64-bit guest fine, so it points to
something with Virtualbox.

-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix
PGP key id: 537C5846
PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB  CA3B 4607 4319 537C 5846


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