search for: ia32_time_stamp_counter

Displaying 2 results from an estimated 2 matches for "ia32_time_stamp_counter".

2012 Sep 20
4
[PATCH 0/3] tsc adjust implementation for hvm
...sc adjust feature at latest SDM 17.13.3. CPUID.7.0.EBX[1]=1 indicates TSC_ADJUST MSR 0x3b is supported. Basically it is used to simplify TSC synchronization, operation of IA32_TSC_ADJUST MSR is as follows: 1). On RESET, the value of the IA32_TSC_ADJUST MSR is 0; 2). If an execution of WRMSR to the IA32_TIME_STAMP_COUNTER MSR adds (or subtracts) value X from the TSC, the logical processor also adds (or subtracts) value X from the IA32_TSC_ADJUST MSR; 3). If an execution of WRMSR to the IA32_TSC_ADJUST MSR adds (or subtracts) value X from that MSR, the logical processor also adds (or subtracts) value X...
2012 Sep 20
1
[PATCH 2/3] Implement tsc adjust feature
Implement tsc adjust feature IA32_TSC_ADJUST MSR is maintained separately for each logical processor. A logical processor maintains and uses the IA32_TSC_ADJUST MSR as follows: 1). On RESET, the value of the IA32_TSC_ADJUST MSR is 0; 2). If an execution of WRMSR to the IA32_TIME_STAMP_COUNTER MSR adds (or subtracts) value X from the TSC, the logical processor also adds (or subtracts) value X from the IA32_TSC_ADJUST MSR; 3). If an execution of WRMSR to the IA32_TSC_ADJUST MSR adds (or subtracts) value X from that MSR, the logical processor also adds (or subtracts) value X...