Re: [PATCH v1 00/11] PEBS virtualization enabling via DS

[Andi Kleen]

> Testing:
> The guest can use PEBS feature like native. e.g.

Could you please add example qemu command lines too? That will make it much easier
for someone to reproduce.

-Andi
> 
> # perf record -e instructions:ppp ./br_instr a
> 
> perf report on guest:
> # Samples: 2K of event 'instructions:ppp', # Event count (approx.): 1473377250
> # Overhead  Command   Shared Object      Symbol
>   57.74%  br_instr  br_instr           [.] lfsr_cond
>   41.40%  br_instr  br_instr           [.] cmp_end
>    0.21%  br_instr  [kernel.kallsyms]  [k] __lock_acquire
> 
> perf report on host:
> # Samples: 2K of event 'instructions:ppp', # Event count (approx.): 1462721386
> # Overhead  Command   Shared Object     Symbol
>   57.90%  br_instr  br_instr          [.] lfsr_cond
>   41.95%  br_instr  br_instr          [.] cmp_end
>    0.05%  br_instr  [kernel.vmlinux]  [k] lock_acquire