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Vol. 3C 35-245

MODEL-SPECIFIC REGISTERS (MSRS)

55

Thread

Set 1 to clear Trace_ToPA_PMI. 

57:56

Reserved.

58

Thread

Set 1 to clear LBR_Frz. 

59

Thread

Set 1 to clear CTR_Frz. 

60

Thread

Set 1 to clear ASCI. 

61

Thread

Set 1 to clear Ovf_Uncore 

62

Thread

Set 1 to clear Ovf_BufDSSAVE 

63

Thread

Set 1 to clear CondChgd 

391H

913

IA32_PERF_GLOBAL_STAT

US_SET

See Table 35-2. See Section 18.2.2.3, “Full-Width Writes to 

Performance Counter Registers.â€

0

Thread

Set 1 to cause Ovf_PMC0 = 1

1

Thread

Set 1 to cause Ovf_PMC1 = 1

2

Thread

Set 1 to cause Ovf_PMC2 = 1

3

Thread

Set 1 to cause Ovf_PMC3 = 1

4

Thread

Set 1 to cause Ovf_PMC4=1 (if CPUID.0AH:EAX[15:8] > 4)

5

Thread

Set 1 to cause Ovf_PMC5=1 (if CPUID.0AH:EAX[15:8] > 5)

6

Thread

Set 1 to cause Ovf_PMC6=1 (if CPUID.0AH:EAX[15:8] > 6)

7

Thread

Set 1 to cause Ovf_PMC7=1 (if CPUID.0AH:EAX[15:8] > 7)

31:8

Reserved.

32

Thread

Set 1 to cause Ovf_FixedCtr0 = 1

33

Thread

Set 1 to cause Ovf_FixedCtr1 = 1

34

Thread

Set 1 to cause Ovf_FixedCtr2 = 1

54:35

Reserved.

55

Thread

Set 1 to cause Trace_ToPA_PMI = 1

57:56

Reserved.

58

Thread

Set 1 to cause LBR_Frz = 1

59

Thread

Set 1 to cause CTR_Frz = 1

60

Thread

Set 1 to cause ASCI = 1

61

Thread

Set 1 to cause Ovf_Uncore 

62

Thread

Set 1 to cause Ovf_BufDSSAVE 

63

Reserved.

392H

913

IA32_PERF_GLOBAL_INUSE

See Table 35-2. 

3F7H

1015

MSR_PEBS_FRONTEND

Thread

FrontEnd Precise Event Condition Select (R/W) 

2:0

Event Code Select 

3

Reserved.

4

Event Code Select High

Table 35-37.  Additional MSRs Supported by 6th Generation Intel® Coreâ„¢ Processors Based on Skylake 

Microarchitecture

Register 

Address

Register Name

Scope

Bit Description

 Hex

Dec