* [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU attributes read @ 2018-05-16 7:05 Rosen Xu 0 siblings, 0 replies; 6+ messages in thread From: Rosen Xu @ 2018-05-16 7:05 UTC (permalink / raw) To: rosen.xu; +Cc: stable Linux kernel 4.10.0 iommu attribute read error Cc: stable@dpdk.org Signed-off-by: Rosen Xu <rosen.xu@intel.com> v2 updates: =========== - Fixed Anatoly comments --- doc/guides/rel_notes/known_issues.rst | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/doc/guides/rel_notes/known_issues.rst b/doc/guides/rel_notes/known_issues.rst index afcc2c4..716bd73 100644 --- a/doc/guides/rel_notes/known_issues.rst +++ b/doc/guides/rel_notes/known_issues.rst @@ -714,3 +714,28 @@ igb_uio can not be used when running l3fwd-power **Driver/Module**: ``igb_uio`` module. + + +Linux kernel 4.10.0 iommu attribute read error +---------------------------------------------- + +**Description**: + When VT-d is enabled (``iommu=pt intel_iommu=on``), reading IOMMU attributes from + /sys/devices/virtual/iommu/dmarXXX/intel-iommu/cap on Linux kernel 4.10.0 error. + This bug is fixed in `Linux commmit a7fdb6e648fb + <https://patchwork.kernel.org/patch/9595727/>`_, + This bug is introduced in `Linux commmit 39ab9555c241 + <https://patchwork.kernel.org/patch/9554403/>`_, + +**Implication**: + When binding devices to VFIO and attempting to run testpmd application, + testpmd (and other DPDK applications) will not initialize. + +**Resolution/Workaround**: + Use other linux kernel version. It only happens in linux kernel 4.10.0. + +**Affected Environment/Platform**: + ALL OS of linux kernel 4.10.0. + +**Driver/Module**: + ``vfio-pci`` module. -- 1.8.3.1 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-stable] [PATCH] doc/guides/rel_notes: Add known issue for IOMMU attributes read @ 2018-05-14 10:44 Rosen Xu 2018-05-16 7:29 ` [dpdk-stable] [PATCH v2] " Rosen Xu 0 siblings, 1 reply; 6+ messages in thread From: Rosen Xu @ 2018-05-14 10:44 UTC (permalink / raw) To: dev Cc: anatoly.burakov, gaetan.rivet, john.mcnamara, rosen.xu, yulong.pei, stable Read IOMMU attributes from linux kernle 4.10.0 error. Cc: stable@dpdk.org Signed-off-by: Rosen Xu <rosen.xu@intel.com> --- doc/guides/rel_notes/known_issues.rst | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/doc/guides/rel_notes/known_issues.rst b/doc/guides/rel_notes/known_issues.rst index afcc2c4..74876ff 100644 --- a/doc/guides/rel_notes/known_issues.rst +++ b/doc/guides/rel_notes/known_issues.rst @@ -714,3 +714,24 @@ igb_uio can not be used when running l3fwd-power **Driver/Module**: ``igb_uio`` module. + + +linux kernel iommu attribute read error +--------------------------------------- + +**Description**: + Read immu attributes from /sys/devices/virtual/iommu/dmarXXX/intel-iommu/cap in linux kernel + 4.10.0 error. That because the link between the iommu sysfs-device and the struct intel_iommu + is no longer stored as driver-data. + +**Implication**: + When insmod ``vfio-pci`` and running testpmd APP, it doesn't initiate properly. + +**Resolution/Workaround**: + Use other linux kernel version. It only happens in linux kernel 4.10.0. + +**Affected Environment/Platform**: + ALL OS of linux kernel 4.10.0. + +**Driver/Module**: + ``vfio-pci`` module. -- 1.8.3.1 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU attributes read 2018-05-14 10:44 [dpdk-stable] [PATCH] " Rosen Xu @ 2018-05-16 7:29 ` Rosen Xu 2018-05-28 15:31 ` Mcnamara, John 0 siblings, 1 reply; 6+ messages in thread From: Rosen Xu @ 2018-05-16 7:29 UTC (permalink / raw) To: dev Cc: anatoly.burakov, gaetan.rivet, john.mcnamara, rosen.xu, yulong.pei, stable Linux kernel 4.10.0 iommu attribute read error Cc: stable@dpdk.org Signed-off-by: Rosen Xu <rosen.xu@intel.com> v2 updates: =========== - Fixed Anatoly comments --- doc/guides/rel_notes/known_issues.rst | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/doc/guides/rel_notes/known_issues.rst b/doc/guides/rel_notes/known_issues.rst index afcc2c4..716bd73 100644 --- a/doc/guides/rel_notes/known_issues.rst +++ b/doc/guides/rel_notes/known_issues.rst @@ -714,3 +714,28 @@ igb_uio can not be used when running l3fwd-power **Driver/Module**: ``igb_uio`` module. + + +Linux kernel 4.10.0 iommu attribute read error +---------------------------------------------- + +**Description**: + When VT-d is enabled (``iommu=pt intel_iommu=on``), reading IOMMU attributes from + /sys/devices/virtual/iommu/dmarXXX/intel-iommu/cap on Linux kernel 4.10.0 error. + This bug is fixed in `Linux commmit a7fdb6e648fb + <https://patchwork.kernel.org/patch/9595727/>`_, + This bug is introduced in `Linux commmit 39ab9555c241 + <https://patchwork.kernel.org/patch/9554403/>`_, + +**Implication**: + When binding devices to VFIO and attempting to run testpmd application, + testpmd (and other DPDK applications) will not initialize. + +**Resolution/Workaround**: + Use other linux kernel version. It only happens in linux kernel 4.10.0. + +**Affected Environment/Platform**: + ALL OS of linux kernel 4.10.0. + +**Driver/Module**: + ``vfio-pci`` module. -- 1.8.3.1 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU attributes read 2018-05-16 7:29 ` [dpdk-stable] [PATCH v2] " Rosen Xu @ 2018-05-28 15:31 ` Mcnamara, John 2018-05-28 15:36 ` Mcnamara, John 0 siblings, 1 reply; 6+ messages in thread From: Mcnamara, John @ 2018-05-28 15:31 UTC (permalink / raw) To: Xu, Rosen, dev Cc: Burakov, Anatoly, gaetan.rivet, Pei, Yulong, stable, Yigit, Ferruh > -----Original Message----- > From: Xu, Rosen > Sent: Wednesday, May 16, 2018 8:29 AM > To: dev@dpdk.org > Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; gaetan.rivet@6wind.com; > Mcnamara, John <john.mcnamara@intel.com>; Xu, Rosen <rosen.xu@intel.com>; > Pei, Yulong <yulong.pei@intel.com>; stable@dpdk.org > Subject: [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU > attributes read > > Linux kernel 4.10.0 iommu attribute read error > > Cc: stable@dpdk.org > > Signed-off-by: Rosen Xu <rosen.xu@intel.com> Could you open an Bugzilla defect for this and add it to the text. Like this patch: http://dpdk.org/dev/patchwork/patch/40475/ Thanks, John ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU attributes read 2018-05-28 15:31 ` Mcnamara, John @ 2018-05-28 15:36 ` Mcnamara, John 2018-05-29 0:25 ` Xu, Rosen 2018-05-30 12:04 ` Thomas Monjalon 0 siblings, 2 replies; 6+ messages in thread From: Mcnamara, John @ 2018-05-28 15:36 UTC (permalink / raw) To: Xu, Rosen, dev Cc: Burakov, Anatoly, gaetan.rivet, Pei, Yulong, stable, Yigit, Ferruh > -----Original Message----- > From: stable [mailto:stable-bounces@dpdk.org] > Sent: Monday, May 28, 2018 4:31 PM > To: Xu, Rosen <rosen.xu@intel.com>; dev@dpdk.org > Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; gaetan.rivet@6wind.com; > Pei, Yulong <yulong.pei@intel.com>; stable@dpdk.org; Yigit, Ferruh > <ferruh.yigit@intel.com> > Subject: Re: [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known > issue for IOMMU attributes read > > > > > -----Original Message----- > > From: Xu, Rosen > > Sent: Wednesday, May 16, 2018 8:29 AM > > To: dev@dpdk.org > > Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; > > gaetan.rivet@6wind.com; Mcnamara, John <john.mcnamara@intel.com>; Xu, > > Rosen <rosen.xu@intel.com>; Pei, Yulong <yulong.pei@intel.com>; > > stable@dpdk.org > > Subject: [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU > > attributes read > > > > Linux kernel 4.10.0 iommu attribute read error > > > > Cc: stable@dpdk.org > > > > Signed-off-by: Rosen Xu <rosen.xu@intel.com> > > > Could you open an Bugzilla defect for this and add it to the text. > > Like this patch: http://dpdk.org/dev/patchwork/patch/40475/ Actually, I changed my mind. This isn't quite the same as the other new, known issues, so there is no need to track it in Bugzilla or move it to the release note. It is okay as is. Acked-by: John McNamara <john.mcnamara@intel.com> ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU attributes read 2018-05-28 15:36 ` Mcnamara, John @ 2018-05-29 0:25 ` Xu, Rosen 2018-05-30 12:04 ` Thomas Monjalon 1 sibling, 0 replies; 6+ messages in thread From: Xu, Rosen @ 2018-05-29 0:25 UTC (permalink / raw) To: Mcnamara, John, dev Cc: Burakov, Anatoly, gaetan.rivet, Pei, Yulong, stable, Yigit, Ferruh, Mcnamara, John, Kovacevic, Marko Hi Mcnamara and Kovacevic, Could you apply this patch? Thanks a lot. > -----Original Message----- > From: Mcnamara, John > Sent: Monday, May 28, 2018 23:37 > To: Xu, Rosen <rosen.xu@intel.com>; dev@dpdk.org > Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; > gaetan.rivet@6wind.com; Pei, Yulong <yulong.pei@intel.com>; > stable@dpdk.org; Yigit, Ferruh <ferruh.yigit@intel.com> > Subject: RE: [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU > attributes read > > > > > -----Original Message----- > > From: stable [mailto:stable-bounces@dpdk.org] > > Sent: Monday, May 28, 2018 4:31 PM > > To: Xu, Rosen <rosen.xu@intel.com>; dev@dpdk.org > > Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; > > gaetan.rivet@6wind.com; Pei, Yulong <yulong.pei@intel.com>; > > stable@dpdk.org; Yigit, Ferruh <ferruh.yigit@intel.com> > > Subject: Re: [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known > > issue for IOMMU attributes read > > > > > > > > > -----Original Message----- > > > From: Xu, Rosen > > > Sent: Wednesday, May 16, 2018 8:29 AM > > > To: dev@dpdk.org > > > Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; > > > gaetan.rivet@6wind.com; Mcnamara, John <john.mcnamara@intel.com>; > > > Xu, Rosen <rosen.xu@intel.com>; Pei, Yulong <yulong.pei@intel.com>; > > > stable@dpdk.org > > > Subject: [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU > > > attributes read > > > > > > Linux kernel 4.10.0 iommu attribute read error > > > > > > Cc: stable@dpdk.org > > > > > > Signed-off-by: Rosen Xu <rosen.xu@intel.com> > > > > > > Could you open an Bugzilla defect for this and add it to the text. > > > > Like this patch: http://dpdk.org/dev/patchwork/patch/40475/ > > Actually, I changed my mind. This isn't quite the same as the other new, > known issues, so there is no need to track it in Bugzilla or move it to the > release note. > > It is okay as is. > > > Acked-by: John McNamara <john.mcnamara@intel.com> > ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU attributes read 2018-05-28 15:36 ` Mcnamara, John 2018-05-29 0:25 ` Xu, Rosen @ 2018-05-30 12:04 ` Thomas Monjalon 1 sibling, 0 replies; 6+ messages in thread From: Thomas Monjalon @ 2018-05-30 12:04 UTC (permalink / raw) To: Xu, Rosen Cc: stable, Mcnamara, John, dev, Burakov, Anatoly, gaetan.rivet, Pei, Yulong, Yigit, Ferruh > > > Linux kernel 4.10.0 iommu attribute read error > > > > > > Cc: stable@dpdk.org > > > > > > Signed-off-by: Rosen Xu <rosen.xu@intel.com> > > > > > > Could you open an Bugzilla defect for this and add it to the text. > > > > Like this patch: http://dpdk.org/dev/patchwork/patch/40475/ > > Actually, I changed my mind. This isn't quite the same as the other new, known issues, so there is no need to track it in Bugzilla or move it to the release note. > > It is okay as is. > > Acked-by: John McNamara <john.mcnamara@intel.com> Applied, thanks ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-05-30 12:04 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2018-05-16 7:05 [dpdk-stable] [PATCH v2] doc/guides/rel_notes: Add known issue for IOMMU attributes read Rosen Xu -- strict thread matches above, loose matches on Subject: below -- 2018-05-14 10:44 [dpdk-stable] [PATCH] " Rosen Xu 2018-05-16 7:29 ` [dpdk-stable] [PATCH v2] " Rosen Xu 2018-05-28 15:31 ` Mcnamara, John 2018-05-28 15:36 ` Mcnamara, John 2018-05-29 0:25 ` Xu, Rosen 2018-05-30 12:04 ` Thomas Monjalon
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