virtualbox.org

Hi,
It seems the "perfctr" driver running under a Linux Guest are blocked by Virtual Box (uses the RDMSR/WRMSR instructions (intel). Has anybody been successful in patching VirtualBox to be compatible with the perctr driver for a Linux Guest?
Best Regards, Fred

AFAIK VirtualBox provides a virtual CPU to the guest so I don't know if this will work at all. Even the 64-bit version with VT-x/AMD-v is limited in regard to direct communications with the CPU.

Thank you for your quick response. Not knowing too much about the internals of VB, I am wondering if the Execution Manager (EM), perhaps through the Patch Manager, can be modified to accept performance counter access?