[PATCH] powerpc: pseries: Round up MSI-X requests

Benjamin Herrenschmidt benh at kernel.crashing.org
Mon Jun 4 16:54:57 EST 2012

On Mon, 2012-06-04 at 16:43 +1000, Michael Ellerman wrote:
> There is some chance this will result in breakage because the driver
> asks for N - and assumes that is what was allocated - and the device is
> configured for > N.

We can fix that. We can whack the configuration back with N, just know
that we have "allocated"  > N.

> But that's a hypothetical, and we know the current approach sucks
> because it will result in many drivers falling back to a single
> interrupt.
> I think this is the least-worst approach in light of the FW limitations,
> and we can always add quirks in here if we really have to.
> Paul is the pseries maintainer so he gets to ACK or NAK it, but from an
> MSI point of view it gets my +1.


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