From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
Matthew Wilcox <matthew@wil.cx>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"grundler@parisc-linux.org" <grundler@parisc-linux.org>,
"mingo@elte.hu" <mingo@elte.hu>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"jgarzik@pobox.com" <jgarzik@pobox.com>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
"jbarnes@virtuousgeek.org" <jbarnes@virtuousgeek.org>,
"rdunlap@xenotime.net" <rdunlap@xenotime.net>,
"mtk.manpages@gmail.com" <mtk.manpages@gmail.com>
Subject: Re: Multiple MSI, take 3
Date: Sat, 12 Jul 2008 13:52:00 +1000 [thread overview]
Message-ID: <1215834720.7549.154.camel@pasglop> (raw)
In-Reply-To: <m1d4lkauxc.fsf@frodo.ebiederm.org>
On Fri, 2008-07-11 at 15:59 -0700, Eric W. Biederman wrote:
> Suresh Siddha <suresh.b.siddha@intel.com> writes:
>
> > With interrupt-remapping, we can program the individual interrupt
> > remapping table entries to point to different cpu's etc. All we have
> > to take care is, do the IRTE allocation in a consecutive block and
> > program the starting index to the MSI registers.
> >
> > Just curious Eric, why do you think that won't work?
>
> Working mask/unmask. With MSI-X as specced if I mask an irq and then unmask
> it, an msi message will fire if something happened while the irq was masked
> and not taken care of before the irq was unmasked. That is the correct
> behavior for an irq and a mmu won't let me get that.
And ? It's just a message, we can ignore it if masked, ie, do
software-masking. Not a big deal... no ?
Ben.
next prev parent reply other threads:[~2008-07-12 3:52 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-11 0:57 Multiple MSI, take 3 Matthew Wilcox
2008-07-11 0:59 ` [PATCH] PCI MSI: Replace 'type' with 'is_msix' Matthew Wilcox
2008-07-11 0:59 ` [PATCH] PCI: Add support for multiple MSI Matthew Wilcox
2008-07-11 8:28 ` Hidetoshi Seto
2008-07-11 9:45 ` Matthew Wilcox
2008-07-12 3:45 ` Benjamin Herrenschmidt
2008-07-11 1:00 ` [PATCH] Rewrite MSI-HOWTO Matthew Wilcox
2008-09-26 6:42 ` Grant Grundler
2008-07-11 1:00 ` [PATCH] AHCI: Request multiple MSIs Matthew Wilcox
2008-07-11 1:00 ` [PATCH] x86-64: Support for " Matthew Wilcox
2008-07-11 4:50 ` Kenji Kaneshige
2008-07-11 8:50 ` Matthew Wilcox
2008-07-14 1:08 ` Kenji Kaneshige
2008-07-11 10:06 ` Multiple MSI, take 3 Eric W. Biederman
2008-07-11 10:23 ` Matthew Wilcox
2008-07-11 10:32 ` David Miller
2008-07-11 10:41 ` Matthew Wilcox
2008-07-11 11:05 ` Eric W. Biederman
2008-07-11 11:34 ` Eric W. Biederman
2008-07-11 12:17 ` Matthew Wilcox
2008-07-11 15:10 ` Matthew Wilcox
2008-07-11 21:59 ` Suresh Siddha
2008-07-11 22:59 ` Eric W. Biederman
2008-07-11 23:15 ` Suresh Siddha
2008-07-11 23:59 ` Eric W. Biederman
2008-07-12 3:52 ` Benjamin Herrenschmidt [this message]
2008-07-12 4:41 ` Eric W. Biederman
2008-07-12 7:36 ` Benjamin Herrenschmidt
2008-07-13 22:30 ` Eric W. Biederman
2008-07-13 22:44 ` Benjamin Herrenschmidt
2008-07-13 23:29 ` Eric W. Biederman
2008-07-14 0:17 ` Benjamin Herrenschmidt
2008-07-14 0:44 ` David Miller
2008-07-14 2:03 ` Eric W. Biederman
2008-07-14 3:19 ` David Miller
2008-09-26 5:30 ` Jike Song
2008-09-27 19:04 ` Matthew Wilcox
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