From: Alexander Gordeev <agordeev@redhat.com>
To: David Laight <David.Laight@ACULAB.COM>
Cc: linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org,
Joerg Roedel <joro@8bytes.org>,
x86@kernel.org, linux-kernel@vger.kernel.org,
linux-ide@vger.kernel.org, Jan Beulich <JBeulich@suse.com>,
Tejun Heo <tj@kernel.org>, Bjorn Helgaas <bhelgaas@google.com>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi_cap() interface
Date: Thu, 26 Sep 2013 14:13:25 +0200 [thread overview]
Message-ID: <20130926121325.GC16774@dhcp-26-207.brq.redhat.com> (raw)
In-Reply-To: <AE90C24D6B3A694183C094C60CF0A2F6026B7360@saturn3.aculab.com>
On Thu, Sep 26, 2013 at 12:34:36PM +0100, David Laight wrote:
> I was thinking that the first call would be done during driver probe
> (assuming such a time exists) so that the subsystem could determine
> how many interrupts all the drivers would like, so it can then
> hand out a smaller number to some of the early drivers in order
> to have some left to satisfy the minimum requirement of later
> ones.
>
> So all it would do is sum the requirements of all the drivers.
It is already implemented - please see commit 448e2ca ("powerpc/pseries:
Implement a quota system for MSIs")
All other archs do not have MSI vector space limitations.
> David
--
Regards,
Alexander Gordeev
agordeev@redhat.com
next prev parent reply other threads:[~2013-09-26 12:11 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
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[not found] ` <20130909152044.GA24962@dhcp-26-207.brq.redhat.com>
2013-09-16 10:22 ` [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi_cap() interface Alexander Gordeev
2013-09-17 14:30 ` Michael Ellerman
2013-09-18 9:48 ` Alexander Gordeev
2013-09-18 14:22 ` Tejun Heo
2013-09-18 16:50 ` Alexander Gordeev
2013-09-20 8:24 ` Alexander Gordeev
2013-09-20 12:27 ` Tejun Heo
2013-09-25 18:02 ` Bjorn Helgaas
2013-09-25 20:58 ` Alexander Gordeev
2013-09-25 21:00 ` Tejun Heo
2013-09-26 7:46 ` Alexander Gordeev
2013-09-26 8:58 ` David Laight
2013-09-26 10:45 ` Alexander Gordeev
2013-09-26 11:34 ` David Laight
2013-09-26 12:13 ` Alexander Gordeev [this message]
2013-09-26 13:11 ` Tejun Heo
2013-09-26 14:39 ` Alexander Gordeev
2013-09-26 14:42 ` Tejun Heo
2013-10-01 7:19 ` Michael Ellerman
2013-09-20 12:26 ` Tejun Heo
2013-10-01 7:26 ` Michael Ellerman
2013-10-01 7:35 ` Michael Ellerman
2013-10-01 11:55 ` Tejun Heo
2013-10-02 2:33 ` Michael Ellerman
2013-10-02 3:23 ` Tejun Heo
2013-09-26 12:32 ` Mark Lord
2013-09-26 13:03 ` Alexander Gordeev
2013-10-02 2:46 ` Mark Lord
2013-10-02 7:26 ` Alexander Gordeev
2013-12-18 18:26 ` Bjorn Helgaas
2013-10-01 7:51 ` Michael Ellerman
2013-10-01 10:35 ` Alexander Gordeev
2013-10-02 2:43 ` Michael Ellerman
2013-10-02 7:10 ` Alexander Gordeev
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