On Monday 14 August 2006 09:47, Stanislav Sedov wrote: > On Mon, 14 Aug 2006 09:32:57 -0400 > John Baldwin <[EMAIL PROTECTED]> mentioned: > > > > You can make use of pcb_onfault to recover from a page fault, but that's > > about it. Kernel code is expected to not generate exceptions. :) > > > > Thanks a lot! I'll try it. > > To clarify: > > I've implemented driver to allow user-level code to read MSRs (Model > specific registers) (like linux's /dev/cpu/msr). It's required for > some programs like x86info. > > As long as not all MSRs documented and reading/writing unexistent MSR > leads to GP fault, I need to recover in that case.
Hmm pcb_onfault won't help with this (it does PF#, not GP#). You will have to hack trap() to provide some sort of fallback for your case. -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
