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
Installing "perfctr" driver (performance counters)
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Perryg
- Site Moderator
- Posts: 34369
- Joined: 6. Sep 2008, 22:55
- Primary OS: Linux other
- VBox Version: OSE self-compiled
- Guest OSses: *NIX
Re: Installing "perfctr" driver (performance counters)
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.
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fklatt
- Posts: 2
- Joined: 13. Sep 2010, 21:44
- Primary OS: MS Windows XP
- VBox Version: OSE other
- Guest OSses: ubuntu 10.04
Re: Installing "perfctr" driver (performance counters)
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?