Hi, all, I want to do some experiments by adding noise to the RDTSC of Guest VMs. For HVM mode, I modified the code in hvm_rdtsc_intercept() as well as adding the printk log. I tested the modification by running a test program in the HVM Guest. The test program just run the folling code: * __asm__ __volatile__ * ( * "rdtsc":"=a"(lo),"=d"(hi) * ); However, I found that the function hvm_rdtsc_intercept() has not been called because there is no printk log I added, when I execute "xl dmesg". For HVM mode, is it correct to modify hvm_rdtsc_intercept() ? Any suggestion about intercept the RDTSC instruction in Guest VM? Thanks very much. Regards QI _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users