User:Lionel/MSR Draft

A prototype of a list of MSR's, lifted straight from the manual.

MSR's

MSR Number	MSR Name	Access	Originator	Description/Comments	Availability
0x00000000	IA32_P5_MC_ADDR (P5_MC_ADDR)		Intel	See Section 35.20 of Intel Architecture Manual 3c, “MSRs in Pentium Processors.”	Intel Family = 05 Model >= 1
0x0000001B	IA32_APIC_BASE (APIC_BASE)		Intel	See Intel Architecture Manual 3c.	Intel Family = 06 Model = 1 and newer Others! AMD Unknown
0x0000003A	IA32_FEATURE_CONTROL	Read/Write	Intel	Control CPU Features	All If CPUID.01H: ECX[bit 5 or bit 6] = 1
0x000000FF	IA32_SAMPLE_AMD		AMD	N/A	AMD Unknown
0x00001107	FCR		VIA	R/W Feature Control Register, eax = FCRValue	VIA Unknown
0x00001108	FCR2	Read/Write	VIA	RW Feature Control Register 2, edx = FCR2_Hi, eax = FCRValue	VIA Unknown
0x00001109	FCR3	Write Only	VIA	Feature Control Register 3, edx = FCR3_Hi, eax = FCRValue	VIA Unknown
0xC0000080	EFER	Read/Write	AMD	Extended Features Enable Register - notably long mode	AMD introduced with K6 CPU. Introduced for syscall/sysret enabling.