Home » Mailing list archives » linux-kernel » 2008 » July » 11

Re: Multiple MSI, take 3

!MAILaRCHIVE_VOTE_RePLACE
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
[view in full thread]
From: Eric W. Biederman <ebiederm@...>
To: Suresh Siddha <suresh.b.siddha@...>
Cc: Matthew Wilcox <matthew@...>, linux-pci@vger.kernel.org <linux-pci@...>, linux-kernel@vger.kernel.org <linux-kernel@...>, grundler@parisc-linux.org <grundler@...>, mingo@elte.hu <mingo@...>, tglx@linutronix.de <tglx@...>, jgarzik@pobox.com <jgarzik@...>, linux-ide@vger.kernel.org <linux-ide@...>, benh@kernel.crashing.org <benh@...>, jbarnes@virtuousgeek.org <jbarnes@...>, rdunlap@xenotime.net <rdunlap@...>, mtk.manpages@gmail.com <mtk.manpages@...>
Subject: Re: Multiple MSI, take 3
Date: Friday, July 11, 2008 - 7:59 pm

Suresh Siddha <suresh.b.siddha@intel.com> writes:


Why do we ever?  It is part of the linux irq API and people wind up using
it in all kinds of strange ways.

One of the more surprising uses I have see is for the real time kernel
people mask the irq, wake up a kernel thread (to handle the irq), then
ack the irq and get out of the interrupt handler.  It looked like
people working on UIO were starting to implement something similar.


Thanks.  That should last us for a little while. :)

Eric
--
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
Messages in current thread:
Multiple MSI, take 3, Matthew Wilcox, (Thu Jul 10, 8:57 pm)
Re: Multiple MSI, take 3, Jike Song, (Fri Sep 26, 1:30 am)
Re: Multiple MSI, take 3, Matthew Wilcox, (Sat Sep 27, 3:04 pm)
Re: Multiple MSI, take 3, Eric W. Biederman, (Fri Jul 11, 6:06 am)
Re: Multiple MSI, take 3, Suresh Siddha, (Fri Jul 11, 5:59 pm)
Re: Multiple MSI, take 3, Eric W. Biederman, (Fri Jul 11, 6:59 pm)
Re: Multiple MSI, take 3, Benjamin Herrenschmidt, (Fri Jul 11, 11:52 pm)
Re: Multiple MSI, take 3, Eric W. Biederman, (Sat Jul 12, 12:41 am)
Re: Multiple MSI, take 3, Benjamin Herrenschmidt, (Sat Jul 12, 3:36 am)
Re: Multiple MSI, take 3, Eric W. Biederman, (Sun Jul 13, 6:30 pm)
Re: Multiple MSI, take 3, Benjamin Herrenschmidt, (Sun Jul 13, 6:44 pm)
Re: Multiple MSI, take 3, Eric W. Biederman, (Sun Jul 13, 7:29 pm)
Re: Multiple MSI, take 3, Benjamin Herrenschmidt, (Sun Jul 13, 8:17 pm)
Re: Multiple MSI, take 3, David Miller, (Sun Jul 13, 8:44 pm)
Re: Multiple MSI, take 3, Eric W. Biederman, (Sun Jul 13, 10:03 pm)
Re: Multiple MSI, take 3, David Miller, (Sun Jul 13, 11:19 pm)
Re: Multiple MSI, take 3, Suresh Siddha, (Fri Jul 11, 7:15 pm)
Re: Multiple MSI, take 3, Eric W. Biederman, (Fri Jul 11, 7:59 pm)
Re: Multiple MSI, take 3, Matthew Wilcox, (Fri Jul 11, 6:23 am)
Re: Multiple MSI, take 3, Eric W. Biederman, (Fri Jul 11, 7:34 am)
Re: Multiple MSI, take 3, Matthew Wilcox, (Fri Jul 11, 8:17 am)
Re: Multiple MSI, take 3, Matthew Wilcox, (Fri Jul 11, 11:10 am)
Re: Multiple MSI, take 3, Eric W. Biederman, (Fri Jul 11, 7:05 am)
Re: Multiple MSI, take 3, David Miller, (Fri Jul 11, 6:32 am)
Re: Multiple MSI, take 3, Matthew Wilcox, (Fri Jul 11, 6:41 am)
[PATCH] Rewrite MSI-HOWTO, Matthew Wilcox, (Thu Jul 10, 9:00 pm)
Re: [PATCH] Rewrite MSI-HOWTO, Grant Grundler, (Fri Sep 26, 2:42 am)
[PATCH] PCI: Add support for multiple MSI, Matthew Wilcox, (Thu Jul 10, 8:59 pm)
Re: [PATCH] PCI: Add support for multiple MSI, Hidetoshi Seto, (Fri Jul 11, 4:28 am)
Re: [PATCH] PCI: Add support for multiple MSI, Benjamin Herrenschmidt, (Fri Jul 11, 11:45 pm)
Re: [PATCH] PCI: Add support for multiple MSI, Matthew Wilcox, (Fri Jul 11, 5:45 am)
[PATCH] AHCI: Request multiple MSIs, Matthew Wilcox, (Thu Jul 10, 9:00 pm)
[PATCH] PCI MSI: Replace 'type' with 'is_msix', Matthew Wilcox, (Thu Jul 10, 8:59 pm)
[PATCH] x86-64: Support for multiple MSIs, Matthew Wilcox, (Thu Jul 10, 9:00 pm)
Re: [PATCH] x86-64: Support for multiple MSIs, Kenji Kaneshige, (Fri Jul 11, 12:50 am)
Re: [PATCH] x86-64: Support for multiple MSIs, Matthew Wilcox, (Fri Jul 11, 4:50 am)
Re: [PATCH] x86-64: Support for multiple MSIs, Kenji Kaneshige, (Sun Jul 13, 9:08 pm)