[Qemu-devel] Para-Virtualized Clock Usage

[Joji Mekkattuparamban (joji)]

Greetings,

 

I have a SMP guest application, running on the 2.6.27 Linux kernel. The application, originally written for bare metal, makes extensive use of the TSC, by directly invoking rdtsc from the user space for timestamp purposes. While running on KVM (RHEL version 6.3), we are running into TSC issues on some hardware. As a solution, I am considering migrating to the pvclock. I am wondering if there is an example for migrating from TSC to the pvclock. Any pointers?

 

Thanks,

 

Joji.