Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
On Tue Jun 02 20, Jerry Snitselaar wrote:
On Tue Jun 02 20, Joerg Roedel wrote:
Hi Jerry,
On Mon, Jun 01, 2020 at 05:02:36PM -0700, Jerry Snitselaar wrote:
Yeah, that will solve the panic.
If you still see the kdump faults, can you please try with the attached
diff? I was not able to reproduce them in my setup.
Regards,
Joerg
I have another hp proliant server now, and reproduced. I will have the
patch below tested shortly. Minor change, I switched group->domain to
domain since group isn't an argument, and *data being passed in comes
from group->domain anyways.
Looks like it solves problem for both the epyc system, and the hp proliant
server,
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b5ea203f6c68..5a6d509f72b6 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1680,8 +1680,12 @@ static void probe_alloc_default_domain(struct bus_type
*bus,
static int iommu_group_do_dma_attach(struct device *dev, void *data)
{
struct iommu_domain *domain = data;
+ int ret = 0;
- return __iommu_attach_device(domain, dev);
+ if (!iommu_is_attach_deferred(group->domain, dev))
+ ret = __iommu_attach_device(group->domain, dev);
+
+ return ret;
}
static int __iommu_group_dma_attach(struct iommu_group *group)
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Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
On Tue Jun 02 20, Joerg Roedel wrote:
Hi Jerry,
On Mon, Jun 01, 2020 at 05:02:36PM -0700, Jerry Snitselaar wrote:
Yeah, that will solve the panic.
If you still see the kdump faults, can you please try with the attached
diff? I was not able to reproduce them in my setup.
Regards,
Joerg
I have another hp proliant server now, and reproduced. I will have the
patch below tested shortly. Minor change, I switched group->domain to
domain since group isn't an argument, and *data being passed in comes
from group->domain anyways.
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b5ea203f6c68..5a6d509f72b6 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1680,8 +1680,12 @@ static void probe_alloc_default_domain(struct bus_type
*bus,
static int iommu_group_do_dma_attach(struct device *dev, void *data)
{
struct iommu_domain *domain = data;
+ int ret = 0;
- return __iommu_attach_device(domain, dev);
+ if (!iommu_is_attach_deferred(group->domain, dev))
+ ret = __iommu_attach_device(group->domain, dev);
+
+ return ret;
}
static int __iommu_group_dma_attach(struct iommu_group *group)
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Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Jerry,
On Mon, Jun 01, 2020 at 05:02:36PM -0700, Jerry Snitselaar wrote:
>
> Yeah, that will solve the panic.
>
If you still see the kdump faults, can you please try with the attached
diff? I was not able to reproduce them in my setup.
Regards,
Joerg
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b5ea203f6c68..5a6d509f72b6 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1680,8 +1680,12 @@ static void probe_alloc_default_domain(struct bus_type
*bus,
static int iommu_group_do_dma_attach(struct device *dev, void *data)
{
struct iommu_domain *domain = data;
+ int ret = 0;
- return __iommu_attach_device(domain, dev);
+ if (!iommu_is_attach_deferred(group->domain, dev))
+ ret = __iommu_attach_device(group->domain, dev);
+
+ return ret;
}
static int __iommu_group_dma_attach(struct iommu_group *group)
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Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
On Tue Jun 02 20, Lu Baolu wrote:
Hi Jerry,
On 6/1/20 6:42 PM, Jerry Snitselaar wrote:
Hi Joerg,
With this patchset, I have an epyc system where if I boot with
iommu=nopt and force a dump I will see some io page faults for a nic
on the system. The vmcore is harvested and the system reboots. I
haven't reproduced it on other systems yet, but without the patchset I
don't see the io page faults during the kdump.
Regards,
Jerry
I just hit an issue on a separate intel based system (kdump iommu=nopt),
where it panics in during intel_iommu_attach_device, in is_aux_domain,
due to device_domain_info being DEFER_DEVICE_DOMAIN_INFO. That doesn't
get set to a valid address until the domain_add_dev_info call.
Is it as simple as the following?
I guess you won't hit this issue if you use iommu/next branch of Joerg's
tree. We've changed to use a generic helper to retrieve the valid per
device iommu data or NULL (if there's no).
Best regards,
baolu
Yeah, that will solve the panic.
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 29d3940847d3..f1bbeed46a4c 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5053,8 +5053,8 @@ is_aux_domain(struct device *dev, struct
iommu_domain *domain)
{
struct device_domain_info *info = dev->archdata.iommu;
- return info && info->auxd_enabled &&
- domain->type == IOMMU_DOMAIN_UNMANAGED;
+ return info && info != DEFER_DEVICE_DOMAIN_INFO &&
+ info->auxd_enabled && domain->type ==
IOMMU_DOMAIN_UNMANAGED;
}
static void auxiliary_link_device(struct dmar_domain *domain,
Regards,
Jerry
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Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Jerry,
On 6/1/20 9:17 PM, Jerry Snitselaar wrote:
On Mon Jun 01 20, Jerry Snitselaar wrote:
On Fri May 29 20, Jerry Snitselaar wrote:
On Tue Apr 14 20, Joerg Roedel wrote:
Hi,
here is the second version of this patch-set. The first version with
some more introductory text can be found here:
https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/
Changes v1->v2:
* Rebased to v5.7-rc1
* Re-wrote the arm-smmu changes as suggested by Robin Murphy
* Re-worked the Exynos patches to hopefully not break the
driver anymore
* Fixed a missing mutex_unlock() reported by Marek Szyprowski,
thanks for that.
There is also a git-branch available with these patches applied:
https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/log/?h=iommu-probe-device-v2
Please review.
Thanks,
Joerg
Joerg Roedel (32):
iommu: Move default domain allocation to separate function
iommu/amd: Implement iommu_ops->def_domain_type call-back
iommu/vt-d: Wire up iommu_ops->def_domain_type
iommu/amd: Remove dma_mask check from check_device()
iommu/amd: Return -ENODEV in add_device when device is not handled by
IOMMU
iommu: Add probe_device() and remove_device() call-backs
iommu: Move default domain allocation to iommu_probe_device()
iommu: Keep a list of allocated groups in __iommu_probe_device()
iommu: Move new probe_device path to separate function
iommu: Split off default domain allocation from group assignment
iommu: Move iommu_group_create_direct_mappings() out of
iommu_group_add_device()
iommu: Export bus_iommu_probe() and make is safe for re-probing
iommu/amd: Remove dev_data->passthrough
iommu/amd: Convert to probe/release_device() call-backs
iommu/vt-d: Convert to probe/release_device() call-backs
iommu/arm-smmu: Convert to probe/release_device() call-backs
iommu/pamu: Convert to probe/release_device() call-backs
iommu/s390: Convert to probe/release_device() call-backs
iommu/virtio: Convert to probe/release_device() call-backs
iommu/msm: Convert to probe/release_device() call-backs
iommu/mediatek: Convert to probe/release_device() call-backs
iommu/mediatek-v1 Convert to probe/release_device() call-backs
iommu/qcom: Convert to probe/release_device() call-backs
iommu/rockchip: Convert to probe/release_device() call-backs
iommu/tegra: Convert to probe/release_device() call-backs
iommu/renesas: Convert to probe/release_device() call-backs
iommu/omap: Remove orphan_dev tracking
iommu/omap: Convert to probe/release_device() call-backs
iommu/exynos: Use first SYSMMU in controllers list for IOMMU core
iommu/exynos: Convert to probe/release_device() call-backs
iommu: Remove add_device()/remove_device() code-paths
iommu: Unexport iommu_group_get_for_dev()
Sai Praneeth Prakhya (1):
iommu: Add def_domain_type() callback in iommu_ops
drivers/iommu/amd_iommu.c | 97
drivers/iommu/amd_iommu_types.h | 1 -
drivers/iommu/arm-smmu-v3.c | 38 +--
drivers/iommu/arm-smmu.c | 39 ++--
drivers/iommu/exynos-iommu.c | 24 +-
drivers/iommu/fsl_pamu_domain.c | 22 +-
drivers/iommu/intel-iommu.c | 68 +-
drivers/iommu/iommu.c | 393 +---
drivers/iommu/ipmmu-vmsa.c | 60 ++---
drivers/iommu/msm_iommu.c | 34 +--
drivers/iommu/mtk_iommu.c | 24 +-
drivers/iommu/mtk_iommu_v1.c | 50 ++--
drivers/iommu/omap-iommu.c | 99 ++--
drivers/iommu/qcom_iommu.c | 24 +-
drivers/iommu/rockchip-iommu.c | 26 +--
drivers/iommu/s390-iommu.c | 22 +-
drivers/iommu/tegra-gart.c | 24 +-
drivers/iommu/tegra-smmu.c | 31 +--
drivers/iommu/virtio-iommu.c | 41 +---
include/linux/iommu.h | 21 +-
20 files changed, 533 insertions(+), 605 deletions(-)
--
2.17.1
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Hi Joerg,
With this patchset, I have an epyc system where if I boot with
iommu=nopt and force a dump I will see some io page faults for a nic
on the system. The vmcore is harvested and the system reboots. I
haven't reproduced it on other systems yet, but without the patchset I
don't see the io page faults during the kdump.
Regards,
Jerry
I just hit an issue on a separate intel based system (kdump iommu=nopt),
where it panics in during intel_iommu_attach_device, in is_aux_domain,
due to device_domain_info being DEFER_DEVICE_DOMAIN_INFO. That doesn't
get set to a valid address until the domain_add_dev_info call.
Is it as simple as the following?
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 29d3940847d3..f1bbeed46a4c 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5053,8 +5053,8 @@ is_aux_domain(struct device *dev, struct
iommu_domain *domain)
{
struct device_domain_info *info = dev->archdata.iommu;
- return info && info->auxd_enabled &&
- domain->type
Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Jerry,
On 6/1/20 6:42 PM, Jerry Snitselaar wrote:
Hi Joerg,
With this patchset, I have an epyc system where if I boot with
iommu=nopt and force a dump I will see some io page faults for a nic
on the system. The vmcore is harvested and the system reboots. I
haven't reproduced it on other systems yet, but without the patchset I
don't see the io page faults during the kdump.
Regards,
Jerry
I just hit an issue on a separate intel based system (kdump iommu=nopt),
where it panics in during intel_iommu_attach_device, in is_aux_domain,
due to device_domain_info being DEFER_DEVICE_DOMAIN_INFO. That doesn't
get set to a valid address until the domain_add_dev_info call.
Is it as simple as the following?
I guess you won't hit this issue if you use iommu/next branch of Joerg's
tree. We've changed to use a generic helper to retrieve the valid per
device iommu data or NULL (if there's no).
Best regards,
baolu
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 29d3940847d3..f1bbeed46a4c 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5053,8 +5053,8 @@ is_aux_domain(struct device *dev, struct
iommu_domain *domain)
{
struct device_domain_info *info = dev->archdata.iommu;
- return info && info->auxd_enabled &&
- domain->type == IOMMU_DOMAIN_UNMANAGED;
+ return info && info != DEFER_DEVICE_DOMAIN_INFO &&
+ info->auxd_enabled && domain->type ==
IOMMU_DOMAIN_UNMANAGED;
}
static void auxiliary_link_device(struct dmar_domain *domain,
Regards,
Jerry
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Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
On Mon Jun 01 20, Jerry Snitselaar wrote:
On Fri May 29 20, Jerry Snitselaar wrote:
On Tue Apr 14 20, Joerg Roedel wrote:
Hi,
here is the second version of this patch-set. The first version with
some more introductory text can be found here:
https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/
Changes v1->v2:
* Rebased to v5.7-rc1
* Re-wrote the arm-smmu changes as suggested by Robin Murphy
* Re-worked the Exynos patches to hopefully not break the
driver anymore
* Fixed a missing mutex_unlock() reported by Marek Szyprowski,
thanks for that.
There is also a git-branch available with these patches applied:
https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/log/?h=iommu-probe-device-v2
Please review.
Thanks,
Joerg
Joerg Roedel (32):
iommu: Move default domain allocation to separate function
iommu/amd: Implement iommu_ops->def_domain_type call-back
iommu/vt-d: Wire up iommu_ops->def_domain_type
iommu/amd: Remove dma_mask check from check_device()
iommu/amd: Return -ENODEV in add_device when device is not handled by
IOMMU
iommu: Add probe_device() and remove_device() call-backs
iommu: Move default domain allocation to iommu_probe_device()
iommu: Keep a list of allocated groups in __iommu_probe_device()
iommu: Move new probe_device path to separate function
iommu: Split off default domain allocation from group assignment
iommu: Move iommu_group_create_direct_mappings() out of
iommu_group_add_device()
iommu: Export bus_iommu_probe() and make is safe for re-probing
iommu/amd: Remove dev_data->passthrough
iommu/amd: Convert to probe/release_device() call-backs
iommu/vt-d: Convert to probe/release_device() call-backs
iommu/arm-smmu: Convert to probe/release_device() call-backs
iommu/pamu: Convert to probe/release_device() call-backs
iommu/s390: Convert to probe/release_device() call-backs
iommu/virtio: Convert to probe/release_device() call-backs
iommu/msm: Convert to probe/release_device() call-backs
iommu/mediatek: Convert to probe/release_device() call-backs
iommu/mediatek-v1 Convert to probe/release_device() call-backs
iommu/qcom: Convert to probe/release_device() call-backs
iommu/rockchip: Convert to probe/release_device() call-backs
iommu/tegra: Convert to probe/release_device() call-backs
iommu/renesas: Convert to probe/release_device() call-backs
iommu/omap: Remove orphan_dev tracking
iommu/omap: Convert to probe/release_device() call-backs
iommu/exynos: Use first SYSMMU in controllers list for IOMMU core
iommu/exynos: Convert to probe/release_device() call-backs
iommu: Remove add_device()/remove_device() code-paths
iommu: Unexport iommu_group_get_for_dev()
Sai Praneeth Prakhya (1):
iommu: Add def_domain_type() callback in iommu_ops
drivers/iommu/amd_iommu.c | 97
drivers/iommu/amd_iommu_types.h | 1 -
drivers/iommu/arm-smmu-v3.c | 38 +--
drivers/iommu/arm-smmu.c| 39 ++--
drivers/iommu/exynos-iommu.c| 24 +-
drivers/iommu/fsl_pamu_domain.c | 22 +-
drivers/iommu/intel-iommu.c | 68 +-
drivers/iommu/iommu.c | 393 +---
drivers/iommu/ipmmu-vmsa.c | 60 ++---
drivers/iommu/msm_iommu.c | 34 +--
drivers/iommu/mtk_iommu.c | 24 +-
drivers/iommu/mtk_iommu_v1.c| 50 ++--
drivers/iommu/omap-iommu.c | 99 ++--
drivers/iommu/qcom_iommu.c | 24 +-
drivers/iommu/rockchip-iommu.c | 26 +--
drivers/iommu/s390-iommu.c | 22 +-
drivers/iommu/tegra-gart.c | 24 +-
drivers/iommu/tegra-smmu.c | 31 +--
drivers/iommu/virtio-iommu.c| 41 +---
include/linux/iommu.h | 21 +-
20 files changed, 533 insertions(+), 605 deletions(-)
--
2.17.1
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Hi Joerg,
With this patchset, I have an epyc system where if I boot with
iommu=nopt and force a dump I will see some io page faults for a nic
on the system. The vmcore is harvested and the system reboots. I
haven't reproduced it on other systems yet, but without the patchset I
don't see the io page faults during the kdump.
Regards,
Jerry
I just hit an issue on a separate intel based system (kdump iommu=nopt),
where it panics in during intel_iommu_attach_device, in is_aux_domain,
due to device_domain_info being DEFER_DEVICE_DOMAIN_INFO. That doesn't
get set to a valid address until the domain_add_dev_info call.
Is it as simple as the following?
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 29d3940847d3..f1bbeed46a4c 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5053,8 +5053,8 @@ is_aux_domain(struct device *dev, struct iommu_domain
*domain)
{
struct device_domain_info *info = dev->archdata.iommu;
- return info && info->auxd_enabled &&
- domain->type == IOMMU_DOMAIN_UNMANA
Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
On Fri May 29 20, Jerry Snitselaar wrote:
On Tue Apr 14 20, Joerg Roedel wrote:
Hi,
here is the second version of this patch-set. The first version with
some more introductory text can be found here:
https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/
Changes v1->v2:
* Rebased to v5.7-rc1
* Re-wrote the arm-smmu changes as suggested by Robin Murphy
* Re-worked the Exynos patches to hopefully not break the
driver anymore
* Fixed a missing mutex_unlock() reported by Marek Szyprowski,
thanks for that.
There is also a git-branch available with these patches applied:
https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/log/?h=iommu-probe-device-v2
Please review.
Thanks,
Joerg
Joerg Roedel (32):
iommu: Move default domain allocation to separate function
iommu/amd: Implement iommu_ops->def_domain_type call-back
iommu/vt-d: Wire up iommu_ops->def_domain_type
iommu/amd: Remove dma_mask check from check_device()
iommu/amd: Return -ENODEV in add_device when device is not handled by
IOMMU
iommu: Add probe_device() and remove_device() call-backs
iommu: Move default domain allocation to iommu_probe_device()
iommu: Keep a list of allocated groups in __iommu_probe_device()
iommu: Move new probe_device path to separate function
iommu: Split off default domain allocation from group assignment
iommu: Move iommu_group_create_direct_mappings() out of
iommu_group_add_device()
iommu: Export bus_iommu_probe() and make is safe for re-probing
iommu/amd: Remove dev_data->passthrough
iommu/amd: Convert to probe/release_device() call-backs
iommu/vt-d: Convert to probe/release_device() call-backs
iommu/arm-smmu: Convert to probe/release_device() call-backs
iommu/pamu: Convert to probe/release_device() call-backs
iommu/s390: Convert to probe/release_device() call-backs
iommu/virtio: Convert to probe/release_device() call-backs
iommu/msm: Convert to probe/release_device() call-backs
iommu/mediatek: Convert to probe/release_device() call-backs
iommu/mediatek-v1 Convert to probe/release_device() call-backs
iommu/qcom: Convert to probe/release_device() call-backs
iommu/rockchip: Convert to probe/release_device() call-backs
iommu/tegra: Convert to probe/release_device() call-backs
iommu/renesas: Convert to probe/release_device() call-backs
iommu/omap: Remove orphan_dev tracking
iommu/omap: Convert to probe/release_device() call-backs
iommu/exynos: Use first SYSMMU in controllers list for IOMMU core
iommu/exynos: Convert to probe/release_device() call-backs
iommu: Remove add_device()/remove_device() code-paths
iommu: Unexport iommu_group_get_for_dev()
Sai Praneeth Prakhya (1):
iommu: Add def_domain_type() callback in iommu_ops
drivers/iommu/amd_iommu.c | 97
drivers/iommu/amd_iommu_types.h | 1 -
drivers/iommu/arm-smmu-v3.c | 38 +--
drivers/iommu/arm-smmu.c| 39 ++--
drivers/iommu/exynos-iommu.c| 24 +-
drivers/iommu/fsl_pamu_domain.c | 22 +-
drivers/iommu/intel-iommu.c | 68 +-
drivers/iommu/iommu.c | 393 +---
drivers/iommu/ipmmu-vmsa.c | 60 ++---
drivers/iommu/msm_iommu.c | 34 +--
drivers/iommu/mtk_iommu.c | 24 +-
drivers/iommu/mtk_iommu_v1.c| 50 ++--
drivers/iommu/omap-iommu.c | 99 ++--
drivers/iommu/qcom_iommu.c | 24 +-
drivers/iommu/rockchip-iommu.c | 26 +--
drivers/iommu/s390-iommu.c | 22 +-
drivers/iommu/tegra-gart.c | 24 +-
drivers/iommu/tegra-smmu.c | 31 +--
drivers/iommu/virtio-iommu.c| 41 +---
include/linux/iommu.h | 21 +-
20 files changed, 533 insertions(+), 605 deletions(-)
--
2.17.1
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Hi Joerg,
With this patchset, I have an epyc system where if I boot with
iommu=nopt and force a dump I will see some io page faults for a nic
on the system. The vmcore is harvested and the system reboots. I
haven't reproduced it on other systems yet, but without the patchset I
don't see the io page faults during the kdump.
Regards,
Jerry
I just hit an issue on a separate intel based system (kdump iommu=nopt),
where it panics in during intel_iommu_attach_device, in is_aux_domain,
due to device_domain_info being DEFER_DEVICE_DOMAIN_INFO. That doesn't
get set to a valid address until the domain_add_dev_info call.
Is it as simple as the following?
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 29d3940847d3..f1bbeed46a4c 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5053,8 +5053,8 @@ is_aux_domain(struct device *dev, struct iommu_domain
*domain)
{
struct device_domain_info *info = dev->archdata.iommu;
- return info && info->auxd_enabled &&
- domain->type == IOMMU_DOMAIN_UNMANAGED;
+ return info && info !=
Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
On Tue Apr 14 20, Joerg Roedel wrote: Hi, here is the second version of this patch-set. The first version with some more introductory text can be found here: https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/ Changes v1->v2: * Rebased to v5.7-rc1 * Re-wrote the arm-smmu changes as suggested by Robin Murphy * Re-worked the Exynos patches to hopefully not break the driver anymore * Fixed a missing mutex_unlock() reported by Marek Szyprowski, thanks for that. There is also a git-branch available with these patches applied: https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/log/?h=iommu-probe-device-v2 Please review. Thanks, Joerg Joerg Roedel (32): iommu: Move default domain allocation to separate function iommu/amd: Implement iommu_ops->def_domain_type call-back iommu/vt-d: Wire up iommu_ops->def_domain_type iommu/amd: Remove dma_mask check from check_device() iommu/amd: Return -ENODEV in add_device when device is not handled by IOMMU iommu: Add probe_device() and remove_device() call-backs iommu: Move default domain allocation to iommu_probe_device() iommu: Keep a list of allocated groups in __iommu_probe_device() iommu: Move new probe_device path to separate function iommu: Split off default domain allocation from group assignment iommu: Move iommu_group_create_direct_mappings() out of iommu_group_add_device() iommu: Export bus_iommu_probe() and make is safe for re-probing iommu/amd: Remove dev_data->passthrough iommu/amd: Convert to probe/release_device() call-backs iommu/vt-d: Convert to probe/release_device() call-backs iommu/arm-smmu: Convert to probe/release_device() call-backs iommu/pamu: Convert to probe/release_device() call-backs iommu/s390: Convert to probe/release_device() call-backs iommu/virtio: Convert to probe/release_device() call-backs iommu/msm: Convert to probe/release_device() call-backs iommu/mediatek: Convert to probe/release_device() call-backs iommu/mediatek-v1 Convert to probe/release_device() call-backs iommu/qcom: Convert to probe/release_device() call-backs iommu/rockchip: Convert to probe/release_device() call-backs iommu/tegra: Convert to probe/release_device() call-backs iommu/renesas: Convert to probe/release_device() call-backs iommu/omap: Remove orphan_dev tracking iommu/omap: Convert to probe/release_device() call-backs iommu/exynos: Use first SYSMMU in controllers list for IOMMU core iommu/exynos: Convert to probe/release_device() call-backs iommu: Remove add_device()/remove_device() code-paths iommu: Unexport iommu_group_get_for_dev() Sai Praneeth Prakhya (1): iommu: Add def_domain_type() callback in iommu_ops drivers/iommu/amd_iommu.c | 97 drivers/iommu/amd_iommu_types.h | 1 - drivers/iommu/arm-smmu-v3.c | 38 +-- drivers/iommu/arm-smmu.c| 39 ++-- drivers/iommu/exynos-iommu.c| 24 +- drivers/iommu/fsl_pamu_domain.c | 22 +- drivers/iommu/intel-iommu.c | 68 +- drivers/iommu/iommu.c | 393 +--- drivers/iommu/ipmmu-vmsa.c | 60 ++--- drivers/iommu/msm_iommu.c | 34 +-- drivers/iommu/mtk_iommu.c | 24 +- drivers/iommu/mtk_iommu_v1.c| 50 ++-- drivers/iommu/omap-iommu.c | 99 ++-- drivers/iommu/qcom_iommu.c | 24 +- drivers/iommu/rockchip-iommu.c | 26 +-- drivers/iommu/s390-iommu.c | 22 +- drivers/iommu/tegra-gart.c | 24 +- drivers/iommu/tegra-smmu.c | 31 +-- drivers/iommu/virtio-iommu.c| 41 +--- include/linux/iommu.h | 21 +- 20 files changed, 533 insertions(+), 605 deletions(-) -- 2.17.1 ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu Hi Joerg, With this patchset, I have an epyc system where if I boot with iommu=nopt and force a dump I will see some io page faults for a nic on the system. The vmcore is harvested and the system reboots. I haven't reproduced it on other systems yet, but without the patchset I don't see the io page faults during the kdump. Regards, Jerry ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Jonathan, Hi Daniel, On Fri, Apr 17, 2020 at 01:14:30AM +, Derrick, Jonathan wrote: > Hi Daniel> I should have CCed you on this, but it should temporarily resolve > that > issue: > https://lists.linuxfoundation.org/pipermail/iommu/2020-April/043253.html Yes, this is an issue in the hotplug handling path which I already fixed in my branch. With next post of this series it should work. Regards, Joerg ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Daniel, On Fri, 2020-04-17 at 09:03 +0800, Daniel Drake wrote: > Hi Joerg, > > > Hi, > > > > here is the second version of this patch-set. The first version with > > some more introductory text can be found here: > > > > https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/ > > Thanks for the continued improvements in this area! > > I may have spotted a problem with setups like VMD. > > The core PCI bus is set up during early boot. > Then, for the PCI bus, we reach iommu_bus_init() -> bus_iommu_probe(). > In there, we call probe_iommu_group() -> dev_iommu_get() for each PCI > device, which allocates dev->iommu in each case. So far so good. > > The problem is that this is the last time that we'll call dev_iommu_get(). > If any PCI bus devices get added after this point, they do not get passed > to dev_iommu_get(). > > So when the vmd module gets loaded later, and creates more PCI devices, > we end up in iommu_bus_notifier() -> iommu_probe_device() > -> __iommu_probe_device() which does: > > dev->iommu->iommu_dev = iommu_dev; > > dev->iommu-> is a NULL dereference because dev_iommu_get() was never > called for this new device. > > Daniel > I should have CCed you on this, but it should temporarily resolve that issue: https://lists.linuxfoundation.org/pipermail/iommu/2020-April/043253.html ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Joerg, > Hi, > > here is the second version of this patch-set. The first version with > some more introductory text can be found here: > > https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/ Thanks for the continued improvements in this area! I may have spotted a problem with setups like VMD. The core PCI bus is set up during early boot. Then, for the PCI bus, we reach iommu_bus_init() -> bus_iommu_probe(). In there, we call probe_iommu_group() -> dev_iommu_get() for each PCI device, which allocates dev->iommu in each case. So far so good. The problem is that this is the last time that we'll call dev_iommu_get(). If any PCI bus devices get added after this point, they do not get passed to dev_iommu_get(). So when the vmd module gets loaded later, and creates more PCI devices, we end up in iommu_bus_notifier() -> iommu_probe_device() -> __iommu_probe_device() which does: dev->iommu->iommu_dev = iommu_dev; dev->iommu-> is a NULL dereference because dev_iommu_get() was never called for this new device. Daniel ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Joerg, On 14.04.2020 15:15, Joerg Roedel wrote: > here is the second version of this patch-set. The first version with > some more introductory text can be found here: > > https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/ > > Changes v1->v2: > > * Rebased to v5.7-rc1 > > * Re-wrote the arm-smmu changes as suggested by Robin Murphy > > * Re-worked the Exynos patches to hopefully not break the > driver anymore Thanks for this rework. This version is much better. Works fine on various Exynos-based boards (ARM and ARM64). Tested-by: Marek Szyprowski Acked-by: Marek Szyprowski (for Exynos and core changes) > * Fixed a missing mutex_unlock() reported by Marek Szyprowski, > thanks for that. > > There is also a git-branch available with these patches applied: > > > https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/log/?h=iommu-probe-device-v2 > > Please review. > > Thanks, > > Joerg > > Joerg Roedel (32): >iommu: Move default domain allocation to separate function >iommu/amd: Implement iommu_ops->def_domain_type call-back >iommu/vt-d: Wire up iommu_ops->def_domain_type >iommu/amd: Remove dma_mask check from check_device() >iommu/amd: Return -ENODEV in add_device when device is not handled by > IOMMU >iommu: Add probe_device() and remove_device() call-backs >iommu: Move default domain allocation to iommu_probe_device() >iommu: Keep a list of allocated groups in __iommu_probe_device() >iommu: Move new probe_device path to separate function >iommu: Split off default domain allocation from group assignment >iommu: Move iommu_group_create_direct_mappings() out of > iommu_group_add_device() >iommu: Export bus_iommu_probe() and make is safe for re-probing >iommu/amd: Remove dev_data->passthrough >iommu/amd: Convert to probe/release_device() call-backs >iommu/vt-d: Convert to probe/release_device() call-backs >iommu/arm-smmu: Convert to probe/release_device() call-backs >iommu/pamu: Convert to probe/release_device() call-backs >iommu/s390: Convert to probe/release_device() call-backs >iommu/virtio: Convert to probe/release_device() call-backs >iommu/msm: Convert to probe/release_device() call-backs >iommu/mediatek: Convert to probe/release_device() call-backs >iommu/mediatek-v1 Convert to probe/release_device() call-backs >iommu/qcom: Convert to probe/release_device() call-backs >iommu/rockchip: Convert to probe/release_device() call-backs >iommu/tegra: Convert to probe/release_device() call-backs >iommu/renesas: Convert to probe/release_device() call-backs >iommu/omap: Remove orphan_dev tracking >iommu/omap: Convert to probe/release_device() call-backs >iommu/exynos: Use first SYSMMU in controllers list for IOMMU core >iommu/exynos: Convert to probe/release_device() call-backs >iommu: Remove add_device()/remove_device() code-paths >iommu: Unexport iommu_group_get_for_dev() > > Sai Praneeth Prakhya (1): >iommu: Add def_domain_type() callback in iommu_ops > > drivers/iommu/amd_iommu.c | 97 > drivers/iommu/amd_iommu_types.h | 1 - > drivers/iommu/arm-smmu-v3.c | 38 +-- > drivers/iommu/arm-smmu.c| 39 ++-- > drivers/iommu/exynos-iommu.c| 24 +- > drivers/iommu/fsl_pamu_domain.c | 22 +- > drivers/iommu/intel-iommu.c | 68 +- > drivers/iommu/iommu.c | 393 +--- > drivers/iommu/ipmmu-vmsa.c | 60 ++--- > drivers/iommu/msm_iommu.c | 34 +-- > drivers/iommu/mtk_iommu.c | 24 +- > drivers/iommu/mtk_iommu_v1.c| 50 ++-- > drivers/iommu/omap-iommu.c | 99 ++-- > drivers/iommu/qcom_iommu.c | 24 +- > drivers/iommu/rockchip-iommu.c | 26 +-- > drivers/iommu/s390-iommu.c | 22 +- > drivers/iommu/tegra-gart.c | 24 +- > drivers/iommu/tegra-smmu.c | 31 +-- > drivers/iommu/virtio-iommu.c| 41 +--- > include/linux/iommu.h | 21 +- > 20 files changed, 533 insertions(+), 605 deletions(-) > Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
[PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi, here is the second version of this patch-set. The first version with some more introductory text can be found here: https://lore.kernel.org/lkml/20200407183742.4344-1-j...@8bytes.org/ Changes v1->v2: * Rebased to v5.7-rc1 * Re-wrote the arm-smmu changes as suggested by Robin Murphy * Re-worked the Exynos patches to hopefully not break the driver anymore * Fixed a missing mutex_unlock() reported by Marek Szyprowski, thanks for that. There is also a git-branch available with these patches applied: https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/log/?h=iommu-probe-device-v2 Please review. Thanks, Joerg Joerg Roedel (32): iommu: Move default domain allocation to separate function iommu/amd: Implement iommu_ops->def_domain_type call-back iommu/vt-d: Wire up iommu_ops->def_domain_type iommu/amd: Remove dma_mask check from check_device() iommu/amd: Return -ENODEV in add_device when device is not handled by IOMMU iommu: Add probe_device() and remove_device() call-backs iommu: Move default domain allocation to iommu_probe_device() iommu: Keep a list of allocated groups in __iommu_probe_device() iommu: Move new probe_device path to separate function iommu: Split off default domain allocation from group assignment iommu: Move iommu_group_create_direct_mappings() out of iommu_group_add_device() iommu: Export bus_iommu_probe() and make is safe for re-probing iommu/amd: Remove dev_data->passthrough iommu/amd: Convert to probe/release_device() call-backs iommu/vt-d: Convert to probe/release_device() call-backs iommu/arm-smmu: Convert to probe/release_device() call-backs iommu/pamu: Convert to probe/release_device() call-backs iommu/s390: Convert to probe/release_device() call-backs iommu/virtio: Convert to probe/release_device() call-backs iommu/msm: Convert to probe/release_device() call-backs iommu/mediatek: Convert to probe/release_device() call-backs iommu/mediatek-v1 Convert to probe/release_device() call-backs iommu/qcom: Convert to probe/release_device() call-backs iommu/rockchip: Convert to probe/release_device() call-backs iommu/tegra: Convert to probe/release_device() call-backs iommu/renesas: Convert to probe/release_device() call-backs iommu/omap: Remove orphan_dev tracking iommu/omap: Convert to probe/release_device() call-backs iommu/exynos: Use first SYSMMU in controllers list for IOMMU core iommu/exynos: Convert to probe/release_device() call-backs iommu: Remove add_device()/remove_device() code-paths iommu: Unexport iommu_group_get_for_dev() Sai Praneeth Prakhya (1): iommu: Add def_domain_type() callback in iommu_ops drivers/iommu/amd_iommu.c | 97 drivers/iommu/amd_iommu_types.h | 1 - drivers/iommu/arm-smmu-v3.c | 38 +-- drivers/iommu/arm-smmu.c| 39 ++-- drivers/iommu/exynos-iommu.c| 24 +- drivers/iommu/fsl_pamu_domain.c | 22 +- drivers/iommu/intel-iommu.c | 68 +- drivers/iommu/iommu.c | 393 +--- drivers/iommu/ipmmu-vmsa.c | 60 ++--- drivers/iommu/msm_iommu.c | 34 +-- drivers/iommu/mtk_iommu.c | 24 +- drivers/iommu/mtk_iommu_v1.c| 50 ++-- drivers/iommu/omap-iommu.c | 99 ++-- drivers/iommu/qcom_iommu.c | 24 +- drivers/iommu/rockchip-iommu.c | 26 +-- drivers/iommu/s390-iommu.c | 22 +- drivers/iommu/tegra-gart.c | 24 +- drivers/iommu/tegra-smmu.c | 31 +-- drivers/iommu/virtio-iommu.c| 41 +--- include/linux/iommu.h | 21 +- 20 files changed, 533 insertions(+), 605 deletions(-) -- 2.17.1 ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
