From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Grant Grundler <grundler@parisc-linux.org>
Cc: Matthew Wilcox <matthew@wil.cx>,
linux-pci@vger.kernel.org,
Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
David Miller <davem@davemloft.net>,
Dan Williams <dan.j.williams@intel.com>,
Martine.Silbermann@hp.com, linux-kernel@vger.kernel.org,
Michael Ellerman <michaele@au1.ibm.com>
Subject: Re: Multiple MSI
Date: Tue, 08 Jul 2008 09:06:34 +1000 [thread overview]
Message-ID: <1215471994.8970.168.camel@pasglop> (raw)
In-Reply-To: <20080707161703.GB7521@colo.lackof.org>
On Mon, 2008-07-07 at 10:17 -0600, Grant Grundler wrote:
> The drivers have to deal with the limitations of the HW spec.
> In this case it means they have to know they are getting power of 2
> number of interrupts. I think exposing this in the API is a requirement
> and not optional.
Ugh ?
The number of interrupts isn't what I was talking about, but the
-alignment- was. ie, the driver should make no assumption that the
irq numbers it will obtain will be aligned to a power-of-two.
Cheers,
Ben.
next prev parent reply other threads:[~2008-07-07 23:08 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-03 2:44 Multiple MSI Matthew Wilcox
2008-07-03 3:24 ` Benjamin Herrenschmidt
2008-07-03 3:59 ` Matthew Wilcox
2008-07-03 4:41 ` Benjamin Herrenschmidt
2008-07-03 6:44 ` Michael Ellerman
2008-07-03 9:10 ` Arnd Bergmann
2008-07-03 9:17 ` Benjamin Herrenschmidt
2008-07-03 11:31 ` Matthew Wilcox
2008-07-03 11:41 ` Benjamin Herrenschmidt
2008-07-04 1:52 ` Michael Ellerman
2008-07-04 8:08 ` Alan Cox
2008-07-03 11:34 ` Matthew Wilcox
2008-07-07 16:17 ` Grant Grundler
2008-07-07 16:39 ` Matthew Wilcox
2008-07-07 16:51 ` Grant Grundler
2008-07-07 23:06 ` Benjamin Herrenschmidt [this message]
2008-07-10 0:55 ` Michael Ellerman
2008-07-05 13:27 ` Matthew Wilcox
2008-07-05 13:34 ` [PATCH 1/4] PCI MSI: Store the number of messages in the msi_desc Matthew Wilcox
2008-07-07 2:05 ` Michael Ellerman
2008-07-07 2:41 ` Matthew Wilcox
2008-07-07 3:26 ` Benjamin Herrenschmidt
2008-07-07 3:48 ` Michael Ellerman
2008-07-07 12:04 ` Matthew Wilcox
2008-07-07 16:02 ` Grant Grundler
2008-07-07 16:19 ` Matthew Wilcox
2008-07-10 1:32 ` Michael Ellerman
2008-07-10 1:35 ` Matthew Wilcox
2008-07-05 13:34 ` [PATCH 2/4] PCI: Support multiple MSI Matthew Wilcox
2008-07-07 2:05 ` Michael Ellerman
2008-07-07 2:45 ` Matthew Wilcox
2008-07-07 3:56 ` Michael Ellerman
2008-07-07 11:31 ` Matthew Wilcox
2008-07-10 1:32 ` Michael Ellerman
2008-07-10 1:43 ` Matthew Wilcox
2008-07-10 4:00 ` Michael Ellerman
2008-07-05 13:34 ` [PATCH 3/4] AHCI: Request multiple MSIs Matthew Wilcox
2008-07-07 16:45 ` Grant Grundler
2008-07-07 17:48 ` Matthew Wilcox
2008-07-20 7:49 ` Grant Grundler
2008-07-05 13:34 ` [PATCH 4/4] x86-64: Support for " Matthew Wilcox
2008-07-05 13:43 ` Multiple MSI Matthew Wilcox
2008-07-05 22:38 ` Matthew Wilcox
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