Solved vm-bhyve could not run with VT-x enabled

J

JamesL

Hello, My system is FreeBSD 14.0-RELEASE-p6, I got
Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz (2000.29-MHz K8-class CPU)
and VT-x: HLT,PAUSE VT-x, enabled by modified the bios.

It was enabled before upgrading the bios to latest. The lasted bios does not have the option and vt is disable by default. Somehow I managed to flash a mod bios to re-enable the VT-x. I also use symcmos tool to modify the register of bios setting from 000 to 001 which enabled the VT.

My dmesg shows VT-x: HLT,PAUSE
I can run virtualbox with no problem.

However when I try to run vm-bhyve,
Code: 
sh:
service vm start
I got
Code: 
sh:
/usr/local/sbin/vm: ERROR: kernel vmm not initialised (no VT-x / AMD SVM cpu support?)

I put vm_disable_host_checks="YES" in rc.conf
vm starts however whenever I run vm command it give me error like this
Code: 
sh:
/usr/local/sbin/vm: ERROR: unable to load vmm.ko!
I tired sudo kldunload vmm.
I manged to this step
Code: 
sh:
sudo vm install void void-live-x86_64-20240314-base.iso
Starting void
  * found guest in /vm/void
  * booting...
Code: 
sh:
sudo vm list
NAME  DATASTORE  LOADER  CPU  MEMORY  VNC  AUTO  STATE
void  default    uefi     2   1G      -    No   Stopped
vm is not running. I guest there is something wrong with the VT-x I could not run vm-BHYVE. I follow this https://vermaden.wordpress.com/2023/08/18/freebsd-bhyve-virtualization/
and this https://srobb.net/vm-bhyve.html and my vm is not running I could not connect to it using vnc viewer

Any ideas? Thanks
 
JamesL said:
I think my cpu does not support POPCNT
Click to expand...
I don't think it has either, but I couldn't find any information about it on Intel's website. The information should be shown in dmesg(8) and/or /var/log/messages:
Code: 
Apr 13 19:19:33 chibacity kernel: CPU: Intel(R) Xeon(R) CPU E5-2667 0 @ 2.90GHz (2893.15-MHz K8-class CPU)
Apr 13 19:19:33 chibacity kernel:   Origin="GenuineIntel"  Id=0x206d7  Family=0x6  Model=0x2d  Stepping=7
Apr 13 19:19:33 chibacity kernel:   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>
Apr 13 19:19:33 chibacity kernel:   Features2=0x1fbee3ff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX>
Apr 13 19:19:33 chibacity kernel:   AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
Apr 13 19:19:33 chibacity kernel:   AMD Features2=0x1<LAHF>
Apr 13 19:19:33 chibacity kernel:   XSAVE Features=0x1<XSAVEOPT>
Apr 13 19:19:33 chibacity kernel:   VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
Apr 13 19:19:33 chibacity kernel:   TSC: P-state invariant, performance statistics
So check your logs and see which features your CPU has.
 
SirDice said:
I don't think it has either, but I couldn't find any information about it on Intel's website. The information should be shown in dmesg(8) and/or /var/log/messages:
Code: 
Apr 13 19:19:33 chibacity kernel: CPU: Intel(R) Xeon(R) CPU E5-2667 0 @ 2.90GHz (2893.15-MHz K8-class CPU)
Apr 13 19:19:33 chibacity kernel:   Origin="GenuineIntel"  Id=0x206d7  Family=0x6  Model=0x2d  Stepping=7
Apr 13 19:19:33 chibacity kernel:   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>
Apr 13 19:19:33 chibacity kernel:   Features2=0x1fbee3ff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX>
Apr 13 19:19:33 chibacity kernel:   AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
Apr 13 19:19:33 chibacity kernel:   AMD Features2=0x1<LAHF>
Apr 13 19:19:33 chibacity kernel:   XSAVE Features=0x1<XSAVEOPT>
Apr 13 19:19:33 chibacity kernel:   VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
Apr 13 19:19:33 chibacity kernel:   TSC: P-state invariant, performance statistics
So check your logs and see which features your CPU has.
Click to expand...

Erichans said:
It seems you're indeed out of luck. POPCNT (POPCNT and LZCNT) starts at the Nehalem microarchitecture: "codename for Intel's 45 nm microarchitecture released in November 2008". List of Intel Core 2 processors (see Core 2 Duo T7200) shows your T7200 is from Release Date August 2006 ("(standard-voltage, 65 nm)"); thus before the start of the Nehalem microarchitecture.
Click to expand...
Thank you so much.
 
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