Messages in this thread | | | Date | Wed, 15 Feb 2017 09:51:28 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 2/2] perf/x86/intel/pt: Fail event creation if VMX operation is on |
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Em Wed, Feb 15, 2017 at 10:34:58AM +0200, Alexander Shishkin escreveu: > Arnaldo Carvalho de Melo <acme@kernel.org> writes: > > Em Tue, Feb 14, 2017 at 03:24:16PM +0200, Alexander Shishkin escreveu: > > Yeah, I saw that as well, and Andi told me about this limitation, so, > > for quite a while now, everytime I need to test PT on the only machine I > > have with it, I have to stop my kvm sessions :-\
> > Thanks for working on this!
> Well, we can't make the limitation go away. You'll still have to stop > kvms to get any 'meaningful' PT data.
If we can't make the limitation go away we need to at least warn users instead of let 'perf record' sit there doing nothing and then at the end return as if everything went well only to when trying to use 'perf script' nothing will appear.
- Arnaldo
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