From: Bruce Richardson <bruce.richardson@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: Ferruh Yigit <ferruh.yigit@intel.com>,
Markus Theil <markus.theil@tu-ilmenau.de>,
dev@dpdk.org, nicolas.dichtel@6wind.com
Subject: Re: [dpdk-dev] [PATCH v7 3/6] igb_uio: fix MSI-X IRQ assignment with new IRQ function
Date: Tue, 12 Sep 2017 09:14:51 +0100 [thread overview]
Message-ID: <20170912081451.GA40060@bricha3-MOBL3.ger.corp.intel.com> (raw)
In-Reply-To: <CAOaVG14ROuQnqYTC3Ow4ppunnFmCMV+4XCHLfp4QtGKxZMmOWw@mail.gmail.com>
On Mon, Sep 11, 2017 at 03:04:01PM -0700, Stephen Hemminger wrote:
> I wonder if it is time to move the bar forward to oldest LTS which is
> 3.2.92
>
That seems reasonable. Probably best to do a deprecation notice for it
in 17.11 and move the bar in 18.02.
/Bruce
>
> On Sep 11, 2017 10:56 AM, "Ferruh Yigit" <ferruh.yigit@intel.com> wrote:
>
> > On 9/5/2017 1:04 PM, Markus Theil wrote:
> > > The patch which introduced the usage of pci_alloc_irq_vectors
> > > came after the patch which switched to non-threaded ISR (f0d1896fa1),
> > > but did not use non-threaded ISR, if pci_alloc_irq_vectors
> > > is used.
> > >
> > > Fixes: 99bb58f3adc7 ("igb_uio: switch to new irq function for
> > > MSI-X")
> > > Cc: nicolas.dichtel@6wind.com
> > >
> > > Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
> > > ---
> > > lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 1 +
> > > 1 file changed, 1 insertion(+)
> > >
> > > diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
> > b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
> > > index 93bb71d..6885e72 100644
> > > --- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
> > > +++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
> > > @@ -331,6 +331,7 @@ igbuio_pci_enable_interrupts(struct rte_uio_pci_dev
> > *udev)
> > > #else
> > > if (pci_alloc_irq_vectors(udev->pdev, 1, 1, PCI_IRQ_MSIX)
> > == 1) {
> > > dev_dbg(&udev->pdev->dev, "using MSI-X");
> > > + udev->info.irq_flags = IRQF_NO_THREAD;
> >
> > IRQF_NO_THREAD seems has been introduced in 2.6.39, so using this flag
> > causing build error for kernel versions < 2.6.39.
> >
> > btw, the flag is already in use, so issue is not related to this patch.
> >
> > In DPDK documentation supported Linux kernel version is >= 2.6.34 [1].
> >
> > We should either increase supported version to 2.6.39, or update igb_uio
> > code.
> >
> > I am for increasing minimum supported kernel version to 2.6.39, any
> > objection / comment?
> >
> > 2.6.39 released on May 2011
> > 2.6.34 released on May 2010
> >
> >
> > [1]
> > http://dpdk.org/doc/guides/linux_gsg/sys_reqs.html#system-software
> >
> > > udev->info.irq = pci_irq_vector(udev->pdev, 0);
> > > udev->mode = RTE_INTR_MODE_MSIX;
> > > break;
> > >
> >
> >
next prev parent reply other threads:[~2017-09-12 8:14 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-21 17:33 [dpdk-dev] [PATCH] igb_uio: MSI IRQ mode, irq enable/disable refactored Markus Theil
2017-08-21 17:51 ` [dpdk-dev] [PATCH v2 1/2] " Markus Theil
2017-08-21 17:51 ` [dpdk-dev] [PATCH v2 2/2] igb_uio: conform to coding conventions Markus Theil
2017-08-22 13:28 ` [dpdk-dev] [PATCH v3] igb_uio: MSI IRQ mode, irq enable/disable refactored Markus Theil
2017-08-30 16:32 ` Ferruh Yigit
2017-08-31 22:05 ` Markus Theil
2017-08-31 10:22 ` [dpdk-dev] [PATCH v4 1/3] igb_uio: refactor irq enable/disable into own functions Markus Theil
2017-08-31 10:22 ` [dpdk-dev] [PATCH v4 2/3] igb_uio: fix irq disable on recent kernels Markus Theil
2017-08-31 10:22 ` [dpdk-dev] [PATCH v4 3/3] igb_uio: MSI IRQ mode Markus Theil
2017-08-31 15:32 ` Stephen Hemminger
2017-08-31 22:07 ` Markus Theil
2017-08-31 21:46 ` [dpdk-dev] [PATCH v5 1/5] igb_uio: refactor irq enable/disable into own functions Markus Theil
2017-08-31 21:46 ` [dpdk-dev] [PATCH v5 2/5] igb_uio: fix irq disable on recent kernels Markus Theil
2017-08-31 21:46 ` [dpdk-dev] [PATCH v5 3/5] igb_uio: MSI IRQ mode Markus Theil
2017-08-31 21:46 ` [dpdk-dev] [PATCH v5 4/5] igb_uio: use msi mask functions from kernel, little corrections Markus Theil
2017-09-01 15:40 ` Stephen Hemminger
2017-09-04 10:03 ` Burakov, Anatoly
2017-09-04 12:43 ` Ferruh Yigit
2017-09-04 15:16 ` Markus Theil
2017-09-04 16:55 ` Ferruh Yigit
2017-08-31 21:47 ` [dpdk-dev] [PATCH v5 5/5] igb_uio: release in exact reverse order Markus Theil
2017-08-22 16:55 ` [dpdk-dev] [PATCH] igb_uio: MSI IRQ mode, irq enable/disable refactored Stephen Hemminger
2017-08-22 18:19 ` Markus Theil
2017-08-23 8:47 ` Bruce Richardson
2017-08-23 8:51 ` Bruce Richardson
2017-09-04 18:17 ` [dpdk-dev] [PATCH v6 1/5] igb_uio: refactor irq enable/disable into own functions Markus Theil
2017-09-04 18:17 ` [dpdk-dev] [PATCH v6 2/5] igb_uio: fix irq disable on recent kernels Markus Theil
2017-09-04 21:32 ` Ferruh Yigit
2017-09-04 18:17 ` [dpdk-dev] [PATCH v6 3/5] igb_uio: fix MSI-X IRQ assignment with new IRQ function Markus Theil
2017-09-04 21:34 ` Ferruh Yigit
2017-09-04 18:17 ` [dpdk-dev] [PATCH v6 4/5] igb_uio: release in exact reverse order Markus Theil
2017-09-04 18:17 ` [dpdk-dev] [PATCH v6 5/5] igb_uio: MSI IRQ mode, use kernel functions for masking MSI and MSI-X Markus Theil
2017-09-04 21:38 ` Ferruh Yigit
2017-09-05 12:04 ` [dpdk-dev] [PATCH v7 1/6] igb_uio: refactor irq enable/disable into own functions Markus Theil
2017-09-05 12:04 ` [dpdk-dev] [PATCH v7 2/6] igb_uio: fix irq disable on recent kernels Markus Theil
2017-09-05 12:04 ` [dpdk-dev] [PATCH v7 3/6] igb_uio: fix MSI-X IRQ assignment with new IRQ function Markus Theil
2017-09-11 17:56 ` Ferruh Yigit
2017-09-11 22:04 ` Stephen Hemminger
2017-09-12 8:14 ` Bruce Richardson [this message]
2017-09-12 15:01 ` Stephen Hemminger
2017-09-12 8:16 ` Bruce Richardson
2017-09-12 16:31 ` Kevin Traynor
2017-09-05 12:04 ` [dpdk-dev] [PATCH v7 4/6] igb_uio: release in exact reverse order Markus Theil
2017-09-05 12:04 ` [dpdk-dev] [PATCH v7 5/6] igb_uio: use kernel functions for masking MSI-X Markus Theil
2017-10-09 21:56 ` Patrick MacArthur
2017-10-12 17:04 ` Ferruh Yigit
2017-10-13 2:49 ` Ferruh Yigit
2017-10-13 8:28 ` Kavanagh, Mark B
2017-10-12 10:50 ` Kavanagh, Mark B
2017-10-12 20:58 ` Ferruh Yigit
2017-10-12 21:15 ` Stephen Hemminger
2017-10-13 0:28 ` Ferruh Yigit
2017-09-05 12:04 ` [dpdk-dev] [PATCH v7 6/6] igb_uio: MSI IRQ mode Markus Theil
2017-09-11 17:48 ` [dpdk-dev] [PATCH v7 1/6] igb_uio: refactor irq enable/disable into own functions Ferruh Yigit
2017-09-14 12:04 ` Markus Theil
2017-10-06 22:05 ` Ferruh Yigit
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