* [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
* 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
* 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 15:31 ` 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
2018-05-16 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
* [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
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2018-05-16 7:29 ` [dpdk-stable] [PATCH v2] " Rosen Xu
2018-05-28 15:31 ` Mcnamara, John
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