Re: Ring 0 task
Adam Lackorzynski <[email protected]>
| Newsgroups | gmane.comp.micro-kernel.l4.devel |
|---|---|
| Message-ID | <[email protected]> |
On Thu Apr 11, 2013 at 20:51:20 +0000, Daniel Waddington - SISA wrote: > To set up the performance counters I have to configure the event > select MSRs, thus an application or privileged server needs to execute > wrmsr. At the moment I have put back in your trap and emulate code > (from an earlier version of the kernel) so that the kernel will > execute on behalf of the app. Of course this is a major security > hole. It would be nice to allow a trusted process access to them. Ack. Thx for letting me know. Adam -- Adam [email protected] Lackorzynski http://os.inf.tu-dresden.de/~adam/