FreeBSD(guest) hangs in Vista(Host) with Intel-VT (VB 1.5.4)

[Martin]

I have a problem running a FreeBSD Guest in a Vista host, when switching on Hardware Virtualization (VT).

The Guest FreeBSD system hangs after the boot loader. (This is when loading the kernel)

• With VBox 1.52 it used to hang at the Freebsd Boot Menu (select boot with/without ACPI etc)
• With VBOx 1.54 the hang appears after selecting the boot device in the boot loader menu.

In both cases the CPU load on my PC goes to 100%, and VBOX does no longer respond. The only way to stop it, is to kill the *process* via the taskmanager.

1) My BIOS has a feature to disable/enable VT availability. The issue only arises if I enable VT in the BIOS. Otherwise VT is not used and the log would say "HWACCM: No VMX or SVM CPU extension found. Reason VERR_VMX_ILLEGAL_FEATURE_CONTROL_MSR"

2) My system (feel free to ask for more info)

• Dell Dimension (with DELL BIOS DM061 Vers 2.2.1 from 23/3/07)
• Intel Core2 CPU 6600 2.4 GHZ
• 4GB Ram (3GB visible to Windows)
• Window Vista Home Premium 32 bit

From the logs:

The following lines are only present if VT is ENABLED

HWACCM: Host CR4=000006F9

HWACCM: MSR_IA32_FEATURE_CONTROL = 5 HWACCM: MSR_IA32_VMX_BASIC_INFO = 1a040000000007 HWACCM: VMCS id = 7 HWACCM: VMCS size = 800 HWACCM: VMCS physical address limit = None HWACCM: VMCS memory type = 6 HWACCM: Dual monitor treatment = 1 HWACCM: MSR_IA32_VMX_PINBASED_CTLS = 1f00000016 HWACCM: VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_EXT_INT_EXIT HWACCM: VMX_VMCS_CTRL_PIN_EXEC_CONTROLS_NMI_EXIT HWACCM: MSR_IA32_VMX_PROCBASED_CTLS = 77b9fffe0401e172 HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_IRQ_WINDOW_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_TSC_OFFSET HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_HLT_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_INVLPG_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MWAIT_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_RDPMC_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_RDTSC_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_LOAD_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR8_STORE_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_TPR_SHADOW HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MOV_DR_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_UNCOND_IO_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_IO_BITMAPS HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_USE_MSR_BITMAPS HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_MONITOR_EXIT HWACCM: VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_PAUSE_EXIT HWACCM: MSR_IA32_VMX_ENTRY_CTLS = 1fff000011ff HWACCM: VMX_VMCS_CTRL_ENTRY_CONTROLS_IA64_MODE HWACCM: VMX_VMCS_CTRL_ENTRY_CONTROLS_ENTRY_SMM HWACCM: VMX_VMCS_CTRL_ENTRY_CONTROLS_DEACTIVATE_DUALMON HWACCM: MSR_IA32_VMX_EXIT_CTLS = 3efff00036dff HWACCM: VMX_VMCS_CTRL_EXIT_CONTROLS_HOST_AMD64 HWACCM: VMX_VMCS_CTRL_EXIT_CONTROLS_ACK_EXTERNAL_IRQ HWACCM: MSR_IA32_VMX_MISC = 403c0 HWACCM: MSR_IA32_VMX_MISC_ACTIVITY_STATES 7 HWACCM: MSR_IA32_VMX_MISC_CR3_TARGET 4 HWACCM: MSR_IA32_VMX_MISC_MAX_MSR 200 HWACCM: MSR_IA32_VMX_MISC_MSEG_ID 0 HWACCM: MSR_IA32_VMX_CR0_FIXED0 = 80000021 HWACCM: MSR_IA32_VMX_CR0_FIXED1 = ffffffff HWACCM: MSR_IA32_VMX_CR4_FIXED0 = 2000 HWACCM: MSR_IA32_VMX_CR4_FIXED1 = 27ff HWACCM: MSR_IA32_VMX_VMCS_ENUM = 2c HWACCM: VMX enabled!

AND these are only present if VT is disabled (the vt enabled log terminates before)

Guest Log: BIOS: int13_diskette: unsupported AH=41 Guest Log: BIOS: int13_harddisk: function 08, unmapped device for ELDL=81 Guest Log: BIOS: int13_harddisk: function 08, unmapped device for ELDL=82 Guest Log: BIOS: int13_harddisk: function 08, unmapped device for ELDL=83 Guest Log: BIOS: int13_harddisk: function 08, unmapped device for ELDL=84 Guest Log: BIOS: int13_harddisk: function 08, unmapped device for ELDL=85 Guest Log: BIOS: int13_harddisk: function 08, unmapped device for ELDL=86 Guest Log: BIOS: int13_harddisk: function 08, unmapped device for ELDL=87

....

I attach the full logs

[Martin]

with VT switched on

[Martin]

with vt switched OFF