From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Michael Ellerman <michael@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, paulus@samba.org,
Anton Blanchard <anton@samba.org>
Subject: Re: [PATCH] powerpc: pseries: Round up MSI-X requests
Date: Mon, 04 Jun 2012 16:54:57 +1000 [thread overview]
Message-ID: <1338792897.7150.68.camel@pasglop> (raw)
In-Reply-To: <1338792215.15716.5.camel@concordia>
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.
>
Cheers,
Ben.
next prev parent reply other threads:[~2012-06-04 6:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-03 23:15 [PATCH] powerpc: pseries: Round up MSI-X requests Anton Blanchard
2012-06-04 6:43 ` Michael Ellerman
2012-06-04 6:54 ` Benjamin Herrenschmidt [this message]
2012-06-05 2:47 ` Anton Blanchard
2012-06-13 5:18 ` Michael Ellerman
2012-06-13 5:25 ` Benjamin Herrenschmidt
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