Displaying 2 results from an estimated 2 matches for "ia32_tsc_adjust".
2012 Sep 20
4
[PATCH 0/3] tsc adjust implementation for hvm
Intel recently release a new tsc 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 W...
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,...