Hypervisor Vendor-Specific MSRs

The following table contains a list of AMD-specific MSRs and describes how the hypervisor handles them. The default behavior for MSRs that are not listed in the following table is passthrough to hardware for root, and #GP for non-root.

MSR number	MSR name	Root	Non-root
0xC0010010	AMD_MSR_SYSCFG	Passthrough	Reads return 0. Writes ignored.
0xC001001F	AMD_MSR_NB_CFG	Passthrough	Reads return 0. Writes ignored.

MSR number

MSR name

Root

Non-root

0xC0010010

AMD_MSR_SYSCFG

Passthrough

Reads return 0.
Writes ignored.

0xC001001F

AMD_MSR_NB_CFG

Passthrough

Reads return 0.
Writes ignored.

The following table contains a list of Intel-specific MSRs and describes how the hypervisor handles them. The default behavior for MSRs that are not listed in the following table is passthrough to hardware for root, and #GP for non-root.

MSR number	MSR name	Root	Non-root
0x006	INTEL_MSR_MONITOR_FILTER_SIZE	#GP	#GP
0x017	INTEL_MSR_PLATFORM_ID	Passthrough	Reads return 0. Writes ignored.
0x03A	INTEL_MSR_FEATURE_CONTROL	#GP	#GP
0x079	INTEL_MSR_BIOS_UPDT_TRIG	Virtualized	Reads return 0. Writes ignored.
0x08B	INTEL_MSR_BIOS_SIGN_ID	Passthrough	Reads return 8FFFFFFF indicating the best possible patch is already loaded. Writes ignored.
0x1A0	INTEL_MSR_MISC_ENABLE	Passthrough	Reads passthrough, Writes ignored
0x38D	INTEL_MSR_ PERF_CAPABILITIES	#GP	#GP
0x38E	INTEL_MSR_PER_GLOBAL_STATUS	#GP	#GP
0x38F	INTEL_MSR_PERF_GLOBAL_CTRL	#GP	#GP
0x390	INTEL_MSR_PERF_GLOBAL_OVF_CTRL	#GP	#GP
0x3F1	INTEL_MSR_PEBS_ENABLE	#GP	#GP
0x480 - 0x48A	INTEL_MSR_VMX_CAPSx	#GP	#GP
0x600	INTEL_MSR_DS_AREA	#GP	#GP

Send comments about this topic to Microsoft

Build date: 11/16/2013