[Skiboot] [PATCH 1/8] pci: Add bitmap to know if a pci device has cfg reg filters

Benjamin Herrenschmidt benh at kernel.crashing.org
Tue Jun 6 23:04:12 AEST 2017

On Tue, 2017-06-06 at 21:22 +1000, Stewart Smith wrote:
> Benjamin Herrenschmidt <benh at kernel.crashing.org> writes:
> > This avoids doing a search through the list of all devices on
> > every config space access to every device under a PHB.
> > 
> > Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Series appears to make sense, merged to master as of
> 41b14f9452c25f3dd74a8304763a3cc58bff019f.
> On the 20ms before checking presence detect, is this something we should
> backport to stable so we get into various service packs? Or more of a
> new hardware thing?

I wouldn't bother, we never hit it in practice, I think the fact that
we init the NPU in between the PHB and the probe is "enough"... pHyp
does hit it though every now and then after refactoring their code so
I'd rather be safe.


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