cpu-kvm: Added informative error message
PerfKvmCounter::attach fails if the user doesn't have privileges to make
the perf_event_open syscall. This is the default privilege setting since
kernel 4.6. I've seen some users in the mailing list resort to running
as root; changing the perf_event_paranoid setting is an alternative.
Reviewed-by: Andreas Sandberg <firstname.lastname@example.org>
Maintainer: Andreas Sandberg <email@example.com>
1 file changed