Chen Liang, On Fri, Aug 08, 2014 at 07:07:59AM +0000, chenliang (T) wrote: > Hi, > We found that value of host cpus tsc are same to echo other when host has > invariant tsc flag.
What you mean exactly? Do you have a test program? > But it is not in vm. The problem is that offset of vcpus tsc are not equal. > The offset is set when > vcpu is created. Is it ok to set same offset? And is it reasonable? > > Best regards > Chen Liang The code at kvm_write_tsc(), in the kernel (arch/x86/kvm/x86.c), should adjust the vcpu tsc offsets properly resulting in cross SMP TSCs being equal in the VM.
