[PATCH 1/8] powerpc/perf: Check that events only include valid bits on Power8

[Anshuman Khandual]

On 06/24/2013 04:58 PM, Michael Ellerman wrote:
> A mistake we have made in the past is that we pull out the fields we
> need from the event code, but don't check that there are no unknown bits
> set. This means that we can't ever assign meaning to those unknown bits
> in future.
> 
> Although we have once again failed to do this at release, it is still
> early days for Power8 so I think we can still slip this in and get away
> with it.
> 
> Signed-off-by: Michael Ellerman <michael at ellerman.id.au>
Reviewed-by: Anshuman Khandual <khandual at linux.vnet.ibm.com>