Messages in this thread | | | Date | Fri, 07 Sep 2012 11:11:56 -0600 | From | David Ahern <> | Subject | Re: [PATCH] perf, ibs: Check syscall attribute flags |
| |
On 9/7/12 11:07 AM, Robert Richter wrote: >> Am I reading this right - if exclude_guest is set then perf_ibs_init >> returns -EINVAL? > > Yes, the hardware does not support this. I will look for a solution > which emulates this is software.
ugh, that's exactly we need for Intel: if precise is set, exclude_guest must be set.
In perf I would like to set exclude_guest if precise is set -- what I mentioned yesterday for the patch https://lkml.org/lkml/2012/7/20/437. With my patch -e cycles:p on AMD will then fail EINVAL.
David
| |