From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: michael@ellerman.id.au
Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH][0/2] RTAS MSI
Date: Thu, 10 Aug 2006 11:23:10 +0200 [thread overview]
Message-ID: <1155201790.17187.138.camel@localhost.localdomain> (raw)
In-Reply-To: <1155198129.9801.92.camel@localhost.localdomain>
> Hmm. As I read the PAPR the firmware calls may do just that (pp 122).
> ie. it doesn't differentiate between MSIs and MSI-Xs as far as I can
> tell. So if we implement pci_enable_msi() via the RTAS calls we might be
> violating that constraint.
It's pretty screwed up .... I don't know what is a proper way out there.
> > pci_enable_msi() should call the firmware to reconfigure for only one
> > MSI and enable just that. MSI-X is the only really sexy thing anyway
> > (that and a way to spread MSI-X accross CPUs from the kernel but that's
> > another topic)
>
> And the current implementation doesn't do that either, so we should fix
> it to only allocate 1 MSI, regardless of what firmware has set.
Yes.
Ben.
next prev parent reply other threads:[~2006-08-10 9:23 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-27 18:15 [PATCH][0/2] RTAS MSI Jake Moilanen
2006-07-27 18:17 ` [PATCH][1/2] export msi symbols Jake Moilanen
2006-07-27 18:41 ` Segher Boessenkool
2006-07-27 18:27 ` [PATCH][2/2] RTAS MSI Jake Moilanen
2006-07-27 18:46 ` Segher Boessenkool
2006-07-27 18:50 ` Segher Boessenkool
2006-07-27 19:34 ` Jake Moilanen
2006-07-27 20:35 ` Segher Boessenkool
2006-07-31 4:07 ` Paul Mackerras
2006-07-31 19:55 ` Jake Moilanen
2006-07-31 4:33 ` Michael Ellerman
2006-07-31 20:47 ` Jake Moilanen
2006-07-31 21:01 ` Jake Moilanen
2006-08-01 23:26 ` Michael Ellerman
2006-08-02 5:35 ` Segher Boessenkool
2006-08-02 9:04 ` Michael Ellerman
2006-08-09 9:50 ` Benjamin Herrenschmidt
2006-08-10 8:03 ` Michael Ellerman
2006-08-10 8:18 ` Benjamin Herrenschmidt
2006-07-28 4:56 ` [PATCH][0/2] " Benjamin Herrenschmidt
2006-07-28 18:43 ` Segher Boessenkool
2006-07-28 18:42 ` Jake Moilanen
2006-07-28 18:53 ` Segher Boessenkool
2006-08-09 2:23 ` Michael Ellerman
2006-08-09 9:52 ` Segher Boessenkool
2006-08-09 10:27 ` Michael Ellerman
2006-08-09 15:41 ` Benjamin Herrenschmidt
2006-08-10 8:22 ` Michael Ellerman
2006-08-10 9:23 ` Benjamin Herrenschmidt [this message]
2006-08-09 15:38 ` Benjamin Herrenschmidt
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