From: Alexander Gordeev <agordeev@redhat.com>
To: Keith Busch <keith.busch@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Matthew Wilcox <willy@linux.intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-nvme@lists.infradead.org,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>
Subject: Re: [PATCH v2 5/9] nvme: Fix invalid call to irq_set_affinity_hint()
Date: Mon, 20 Jan 2014 09:38:36 +0100 [thread overview]
Message-ID: <20140120083835.GA19068@dhcp-26-207.brq.redhat.com> (raw)
In-Reply-To: <alpine.LRH.2.03.1401171419370.25844@AMR>
On Fri, Jan 17, 2014 at 03:01:10PM -0700, Keith Busch wrote:
> >dev->entry[0].vector is initialized in nvme_dev_map(), and it's used
> >for free_irq() above the area of your patch, so I don't think this is
> >actually a bug, though it might be somewhat confusing.
>
> It is confusing, but there's a reason. :)
>
> We send a single command using legacy irq to discover how many msix
> vectors we want. The legacy entry needs to be set some time before calling
> request_irq in nvme_configure_admin_queue, but also within nvme_dev_start
> (for power-management). I don't think there's a place to set it that
> won't look odd when looking at nvme_setup_io_queues. I settled on
> 'nvme_dev_map' was because 'nvme_dev_unmap' invalidates the entries,
> so this seemed to provide some amount of symmetry.
I am sending v3 of the patch which concerns Bjorn's comment.
I am also sending two follow-up patches an attempt to make nvme_dev_start()
more readable and fix couple of (what I suspect are) issues.
Thanks!
--
Regards,
Alexander Gordeev
agordeev@redhat.com
next prev parent reply other threads:[~2014-01-20 8:37 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-17 16:02 [PATCH v2 0/9] Phase out pci_enable_msi_block() Alexander Gordeev
2014-01-17 9:26 ` [PATCH 10/9] PCI/MSI: Undeprecate pci_enable_msi() Alexander Gordeev
2014-01-29 22:10 ` Bjorn Helgaas
2014-01-17 9:27 ` [PATCH 11/9] PCI/MSI: Phase out pci_enable_msi_block() Alexander Gordeev
2014-01-29 22:22 ` Bjorn Helgaas
2014-01-17 16:02 ` [PATCH v2 1/9] ahci: Fix broken fallback to single MSI mode Alexander Gordeev
2014-01-17 16:02 ` [PATCH v2 2/9] ahci: Use pci_enable_msi_range() Alexander Gordeev
2014-01-17 16:02 ` [PATCH v2 3/9] ipr: Get rid of superfluous call to pci_disable_msi/msix() Alexander Gordeev
2014-01-17 16:02 ` [PATCH v2 4/9] ipr: Use pci_enable_msi_range() and pci_enable_msix_range() Alexander Gordeev
2014-01-28 9:54 ` Alexander Gordeev
2014-01-28 15:28 ` Brian King
2014-01-29 13:26 ` Alexander Gordeev
2014-01-30 14:06 ` Alexander Gordeev
2014-01-30 14:09 ` [PATCH v2 1/2] ipr: Get rid of superfluous call to pci_disable_msi/msix() Alexander Gordeev
2014-02-03 15:20 ` Brian King
2014-01-30 14:10 ` [PATCH v2 2/2] ipr: Use pci_enable_msi_range() and pci_enable_msix_range() Alexander Gordeev
2014-02-03 15:22 ` Brian King
2014-02-24 8:12 ` [PATCH v2 4/9] " Alexander Gordeev
2014-02-26 15:02 ` Brian King
2014-01-17 16:02 ` [PATCH v2 5/9] nvme: Fix invalid call to irq_set_affinity_hint() Alexander Gordeev
2014-01-17 19:40 ` Bjorn Helgaas
2014-01-17 22:01 ` Keith Busch
2014-01-20 8:38 ` Alexander Gordeev [this message]
2014-01-20 8:40 ` [PATCH v3 6/9] nvme: Use pci_enable_msi_range() and pci_enable_msix_range() Alexander Gordeev
2014-02-05 13:07 ` Alexander Gordeev
2014-02-18 17:54 ` Keith Busch
2014-01-20 8:42 ` [PATCH] nvme: Cleanup nvme_dev_start() and fix IRQ leak Alexander Gordeev
2014-01-20 22:48 ` Keith Busch
2014-01-21 10:03 ` Alexander Gordeev
2014-01-21 10:06 ` [PATCH 1/2] Revert "NVMe: Disable admin queue on init failure" Alexander Gordeev
2014-01-21 10:07 ` [PATCH 2/2] nvme: Cleanup nvme_dev_start() and fix IRQ leak Alexander Gordeev
2014-01-21 19:06 ` Keith Busch
2014-01-20 8:43 ` [PATCH] nvme: Cleanup nvme_dev_start() Alexander Gordeev
2014-01-20 16:41 ` Keith Busch
2014-01-17 16:02 ` [PATCH v2 6/9] nvme: Use pci_enable_msi_range() and pci_enable_msix_range() Alexander Gordeev
2014-01-17 16:02 ` [PATCH v2 7/9] vfio: " Alexander Gordeev
2014-01-29 21:36 ` Bjorn Helgaas
2014-01-17 16:02 ` [PATCH v2 8/9] ath10k: Use pci_enable_msi_range() Alexander Gordeev
2014-01-30 13:48 ` [PATCH 1/3] ath10k: Get rid of superfluous call to pci_disable_msi() Alexander Gordeev
2014-02-04 18:32 ` Kalle Valo
2014-02-04 19:09 ` Alexander Gordeev
2014-02-05 8:21 ` Kalle Valo
2014-02-05 8:50 ` Alexander Gordeev
2014-02-05 8:54 ` Kalle Valo
2014-02-12 0:31 ` Bjorn Helgaas
2014-02-12 13:38 ` Alexander Gordeev
2014-02-12 19:28 ` Bjorn Helgaas
2014-02-12 21:30 ` Kalle Valo
2014-02-12 21:40 ` Bjorn Helgaas
2014-02-13 10:29 ` Kalle Valo
2014-02-13 13:18 ` Alexander Gordeev
2014-02-13 16:04 ` Kalle Valo
2014-01-30 13:48 ` [PATCH 2/3] ath10k: Disable MSI in case IRQ configuration is unknown Alexander Gordeev
2014-01-30 13:49 ` [PATCH v3 3/3] ath10k: Use pci_enable_msi_range() Alexander Gordeev
2014-02-03 11:02 ` [PATCH v2 8/9] " Alexander Gordeev
2014-01-17 16:02 ` [PATCH v2 9/9] wil6210: " Alexander Gordeev
2014-01-29 21:37 ` Bjorn Helgaas
2014-02-07 14:46 ` [PATCH] wil6210: Fix switch operator "missing break?" warning Alexander Gordeev
2014-02-10 10:54 ` Vladimir Kondratiev
2014-02-10 12:16 ` Alexander Gordeev
2014-02-11 1:32 ` Fengguang Wu
2014-01-17 21:00 ` [PATCH v2 0/9] Phase out pci_enable_msi_block() Bjorn Helgaas
2014-01-18 7:15 ` Alexander Gordeev
2014-01-18 14:38 ` Bjorn Helgaas
2014-01-18 14:59 ` Tejun Heo
2014-01-29 21:48 ` Bjorn Helgaas
2014-01-29 13:59 ` Alexander Gordeev
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