Hello all,
Can anybody help me with this question? I want to read the timestamp counter using rdtsc inside the KVM virtual machine. >From some blogs, I know I need to disable the following options when starting >qemu: vmx-rdtsc-exit vmx-rdtscp-exit tsc-scale tsc-adjust vmx-tsc-offset And enable the following options: rdtscp tsc However, after specifying these options, the rdtsc inside the VM still returns an adjusted counter instead of host counter. This is the result shown by the vmxcap script: Use TSC offsetting no RDTSC exiting no Enable RDTSCP no TSC scaling yes I really appreciate it if anyone could help me. Thank you so much! Best, Tao
