On 1/25/22 8:57 AM, Robin Murphy wrote:
On 2022-01-24 07:11, Lu Baolu wrote:
Add a domain specific callback set, domain_ops, for vendor iommu driver
to provide domain specific operations. Move domain-specific callbacks
from iommu_ops to the domain_ops and hook them when a domain is
allocated.
On 2022-01-19 20:06, Zi Yan wrote:
From: Zi Yan
has_unmovable_pages() is only used in mm/page_isolation.c. Move it from
mm/page_alloc.c and make it static.
Signed-off-by: Zi Yan
Reviewed-by: Oscar Salvador
--
Oscar Salvador
SUSE Labs
___
iommu
On 1/25/22 1:55 AM, Jason Gunthorpe wrote:
On Mon, Jan 24, 2022 at 03:11:02PM +0800, Lu Baolu wrote:
- int (*enable_nesting)(struct iommu_domain *domain);
Lu, there is an implementation in the Intel driver here, is it usable
at all?
It's useless and I have cleaned it up in this
On 1/24/22 5:58 PM, Tian, Kevin wrote:
From: Lu Baolu
Sent: Monday, January 24, 2022 3:11 PM
+/**
+ * struct domain_ops - per-domain ops
+ * @attach_dev: attach an iommu domain to a device
+ * @detach_dev: detach an iommu domain from a device
What is the criteria about whether an op should be
On 1/25/22 1:24 AM, Jason Gunthorpe wrote:
On Mon, Jan 24, 2022 at 01:37:21AM -0800, Christoph Hellwig wrote:
On Mon, Jan 24, 2022 at 03:11:02PM +0800, Lu Baolu wrote:
Add a domain specific callback set, domain_ops, for vendor iommu driver
to provide domain specific operations. Move
On 1/24/22 5:37 PM, Christoph Hellwig wrote:
On Mon, Jan 24, 2022 at 03:11:02PM +0800, Lu Baolu wrote:
Add a domain specific callback set, domain_ops, for vendor iommu driver
to provide domain specific operations. Move domain-specific callbacks
from iommu_ops to the domain_ops and hook them
On 1/25/22 8:20 AM, Robin Murphy wrote:
On 2022-01-24 07:11, Lu Baolu wrote:
The common iommu_ops is hooked to both device and domain. When a helper
has both device and domain pointer, the way to get the iommu_ops looks
messy in iommu core. This sorts out the way to get iommu_ops. The device
On 1/25/22 1:36 AM, Jason Gunthorpe wrote:
On Mon, Jan 24, 2022 at 03:11:01PM +0800, Lu Baolu wrote:
The common iommu_ops is hooked to both device and domain. When a helper
has both device and domain pointer, the way to get the iommu_ops looks
messy in iommu core. This sorts out the way to get
On 1/24/22 5:48 PM, Tian, Kevin wrote:
From: Lu Baolu
Sent: Monday, January 24, 2022 3:11 PM
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index aa5486243892..111b3e9c79bb 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -385,6 +385,14 @@ static inline void
On 1/24/22 5:32 PM, Christoph Hellwig wrote:
On Mon, Jan 24, 2022 at 03:11:01PM +0800, Lu Baolu wrote:
The common iommu_ops is hooked to both device and domain. When a helper
has both device and domain pointer, the way to get the iommu_ops looks
messy in iommu core. This sorts out the way to
On 1/24/22 5:29 PM, Christoph Hellwig wrote:
On Mon, Jan 24, 2022 at 03:11:00PM +0800, Lu Baolu wrote:
The supported page sizes of an iommu_domain are saved in the pgsize_bitmap
field. Retrieve the value from the right place.
Signed-off-by: Lu Baolu
Reviewed-by: Robin Murphy
Link:
> From: Jason Gunthorpe
> Sent: Tuesday, January 25, 2022 1:44 AM
>
> On Mon, Jan 24, 2022 at 09:46:26AM +, Tian, Kevin wrote:
> > > From: Lu Baolu
> > > Sent: Monday, January 24, 2022 3:11 PM
> > >
> > > Hi,
> > >
> > > The guest pasid and aux-domain related code are dead code in current
>
On 2022-01-24 07:11, Lu Baolu wrote:
Add a domain specific callback set, domain_ops, for vendor iommu driver
to provide domain specific operations. Move domain-specific callbacks
from iommu_ops to the domain_ops and hook them when a domain is allocated.
I think it would make a lot of sense for
On 2022-01-24 07:11, Lu Baolu wrote:
The common iommu_ops is hooked to both device and domain. When a helper
has both device and domain pointer, the way to get the iommu_ops looks
messy in iommu core. This sorts out the way to get iommu_ops. The device
related helpers go through device pointer,
On Mon, Jan 24 2022 at 12:52, Fenghua Yu wrote:
> On Mon, Jan 24, 2022 at 09:36:00PM +0100, Thomas Gleixner wrote:
>> On Mon, Jan 24 2022 at 21:21, Thomas Gleixner wrote:
> Ah. This patch should remove ioasid_get(). So I will change this patch
> as follows:
>
> 1. Remove ioasid_get() because it's
Hi, Thomas,
On Mon, Jan 24, 2022 at 09:36:00PM +0100, Thomas Gleixner wrote:
> On Mon, Jan 24 2022 at 21:21, Thomas Gleixner wrote:
> >
> > Hrm. This is odd.
> >
> >> +/* Associate a PASID with an mm_struct: */
> >> +static inline void mm_pasid_get(struct mm_struct *mm, u32 pasid)
> >> +{
> >> +
On Mon, Jan 24 2022 at 21:21, Thomas Gleixner wrote:
>
> Hrm. This is odd.
>
>> +/* Associate a PASID with an mm_struct: */
>> +static inline void mm_pasid_get(struct mm_struct *mm, u32 pasid)
>> +{
>> +mm->pasid = pasid;
>> +}
>
> This does not get anything. It sets the allocated PASID in the
Hi, Thomas,
On Mon, Jan 24, 2022 at 09:21:24PM +0100, Thomas Gleixner wrote:
> On Fri, Dec 17 2021 at 22:01, Fenghua Yu wrote:
> > diff --git a/drivers/iommu/iommu-sva-lib.c b/drivers/iommu/iommu-sva-lib.c
> > index bd41405d34e9..ee2294e02716 100644
> > --- a/drivers/iommu/iommu-sva-lib.c
> > +++
On Fri, Dec 17 2021 at 22:01, Fenghua Yu wrote:
> diff --git a/drivers/iommu/iommu-sva-lib.c b/drivers/iommu/iommu-sva-lib.c
> index bd41405d34e9..ee2294e02716 100644
> --- a/drivers/iommu/iommu-sva-lib.c
> +++ b/drivers/iommu/iommu-sva-lib.c
> @@ -18,8 +18,7 @@ static
On Mon, Jan 24, 2022 at 03:11:02PM +0800, Lu Baolu wrote:
> - int (*enable_nesting)(struct iommu_domain *domain);
Perhaps for another series, but enable_nesting looks like dead code
too, AFAICT.
Or at the very least I can't figure how out VFIO_TYPE1_NESTING_IOMMU
is supposed to work, or find
On Mon, Jan 24, 2022 at 09:46:26AM +, Tian, Kevin wrote:
> > From: Lu Baolu
> > Sent: Monday, January 24, 2022 3:11 PM
> >
> > Hi,
> >
> > The guest pasid and aux-domain related code are dead code in current
> > iommu subtree. As we have reached a consensus that all these features
> >
On Mon, Jan 24, 2022 at 03:11:01PM +0800, Lu Baolu wrote:
> The common iommu_ops is hooked to both device and domain. When a helper
> has both device and domain pointer, the way to get the iommu_ops looks
> messy in iommu core. This sorts out the way to get iommu_ops. The device
> related helpers
On Mon, Jan 24, 2022 at 01:37:21AM -0800, Christoph Hellwig wrote:
> On Mon, Jan 24, 2022 at 03:11:02PM +0800, Lu Baolu wrote:
> > Add a domain specific callback set, domain_ops, for vendor iommu driver
> > to provide domain specific operations. Move domain-specific callbacks
> > from iommu_ops to
On Mon, Jan 24, 2022 at 09:58:18AM +, Tian, Kevin wrote:
> > From: Lu Baolu
> > Sent: Monday, January 24, 2022 3:11 PM
> > +/**
> > + * struct domain_ops - per-domain ops
> > + * @attach_dev: attach an iommu domain to a device
> > + * @detach_dev: detach an iommu domain from a device
>
>
On 24 Jan 2022, at 4:55, Oscar Salvador wrote:
> On 2022-01-19 20:06, Zi Yan wrote:
>> From: Zi Yan
>>
>> Enable set_migratetype_isolate() to check specified sub-range for
>> unmovable pages during isolation. Page isolation is done
>> at max(MAX_ORDER_NR_PAEGS, pageblock_nr_pages) granularity,
On Mon, Jan 24, 2022 at 11:12:07AM -0500, Zi Yan wrote:
> On 24 Jan 2022, at 9:02, Mel Gorman wrote:
>
> > On Wed, Jan 19, 2022 at 02:06:17PM -0500, Zi Yan wrote:
> >> From: Zi Yan
> >>
> >> This is done in addition to MIGRATE_ISOLATE pageblock merge avoidance.
> >> It prepares for the upcoming
Prefer kcalloc() to kzalloc(array_size()) for allocating an array.
Signed-off-by: Robin Murphy
---
kernel/dma/swiotlb.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index f56d6504903c..44c49c3616fe 100644
---
Debugfs functions are already stubbed out for !CONFIG_DEBUG_FS, so we
can remove most of the #ifdefs, just keeping one to manually optimise
away the initcall when it would do nothing. We can also simplify the
code itself by factoring out the directory creation and realising that
the global
SWIOTLB's includes have become a great big mess. Restore some order by
consolidating the random different blocks, sorting alphabetically, and
purging some clearly unnecessary entries - linux/io.h is now included
unconditionally, so need not be duplicated in the restricted DMA pool
case; similarly,
Hi all,
Here's a little collection of cleanup patches for some annoyances
that have built up while looking at SWIOTLB code recently.
Cheers,
Robin.
Robin Murphy (3):
swiotlb: Simplify debugfs setup
swiotlb: Tidy up includes
swiotlb: Simplify array allocation
kernel/dma/swiotlb.c | 74
On Mon, Jan 24, 2022 at 10:16:07AM +, Jean-Philippe Brucker wrote:
> On Mon, Jan 24, 2022 at 09:58:18AM +, Tian, Kevin wrote:
> > > From: Lu Baolu
> > > Sent: Monday, January 24, 2022 3:11 PM
> > > +/**
> > > + * struct domain_ops - per-domain ops
> > > + * @attach_dev: attach an iommu
On 24 Jan 2022, at 9:02, Mel Gorman wrote:
> On Wed, Jan 19, 2022 at 02:06:17PM -0500, Zi Yan wrote:
>> From: Zi Yan
>>
>> This is done in addition to MIGRATE_ISOLATE pageblock merge avoidance.
>> It prepares for the upcoming removal of the MAX_ORDER-1 alignment
>> requirement for CMA and
On 2022-01-19 20:06, Zi Yan wrote:
From: Zi Yan
Enable set_migratetype_isolate() to check specified sub-range for
unmovable pages during isolation. Page isolation is done
at max(MAX_ORDER_NR_PAEGS, pageblock_nr_pages) granularity, but not all
pages within that granularity are intended to be
On Wed, Jan 19, 2022 at 02:06:17PM -0500, Zi Yan wrote:
> From: Zi Yan
>
> This is done in addition to MIGRATE_ISOLATE pageblock merge avoidance.
> It prepares for the upcoming removal of the MAX_ORDER-1 alignment
> requirement for CMA and alloc_contig_range().
>
> MIGRARTE_HIGHATOMIC should
HiSilicon PCIe tune and trace device (PTT) is a PCIe Root Complex
integrated Endpoint (RCiEP) device, providing the capability
to dynamically monitor and tune the PCIe traffic (tune),
and trace the TLP headers (trace).
PTT tune is designed for monitoring and adjusting PCIe link parameters.
We
HiSilicon PCIe tune and trace device(PTT) is a PCIe Root Complex
integrated Endpoint(RCiEP) device, providing the capability
to dynamically monitor and tune the PCIe traffic, and trace
the TLP headers.
Add the driver for the device to enable the trace function.
This patch adds basic function of
Register PMU device of PTT trace, then users can use
trace through perf command. The driver makes use of perf
AUX trace and support following events to configure the
trace:
- filter: select Root port or Endpoint to trace
- type: select the type of traced TLP headers
- direction: select the
From: Qi Liu
'perf record' and 'perf report --dump-raw-trace' supported in this
patch.
Example usage:
Output will contain raw PTT data and its textual representation, such
as:
0 0 0x5810 [0x30]: PERF_RECORD_AUXTRACE size: 0x40 offset: 0
ref: 0xa5d50c725 idx: 0 tid: -1 cpu: 0
.
. ...
The PCIe devices supported by the PTT trace can be removed/rescanned
by hotplug or through sysfs. Add support for dynamically updating
the available filter list by registering a PCI bus notifier block.
Then user can always get latest information about available tracing
filters and driver can
Add tune function for the HiSilicon Tune and Trace device. The interface
of tune is exposed through sysfs attributes of PTT PMU device.
Signed-off-by: Yicong Yang
---
drivers/hwtracing/ptt/hisi_ptt.c | 154 +++
drivers/hwtracing/ptt/hisi_ptt.h | 19
2 files
Add maintainer for driver and documentation of HiSilicon PTT device.
Signed-off-by: Yicong Yang
---
MAINTAINERS | 7 +++
1 file changed, 7 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index ea3e6c914384..237c618a74d5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8689,6 +8689,13 @@
The DMA of HiSilicon PTT device can only work with identical
mapping. So add a quirk for the device to force the domain
passthrough.
Signed-off-by: Yicong Yang
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 16
1 file changed, 16 insertions(+)
diff --git
Document the introduction and usage of HiSilicon PTT device driver.
Signed-off-by: Yicong Yang
---
Documentation/trace/hisi-ptt.rst | 304 +++
1 file changed, 304 insertions(+)
create mode 100644 Documentation/trace/hisi-ptt.rst
diff --git
On Mon, Jan 24, 2022 at 09:58:18AM +, Tian, Kevin wrote:
> > From: Lu Baolu
> > Sent: Monday, January 24, 2022 3:11 PM
> > +/**
> > + * struct domain_ops - per-domain ops
> > + * @attach_dev: attach an iommu domain to a device
> > + * @detach_dev: detach an iommu domain from a device
>
>
> From: Lu Baolu
> Sent: Monday, January 24, 2022 3:11 PM
> +/**
> + * struct domain_ops - per-domain ops
> + * @attach_dev: attach an iommu domain to a device
> + * @detach_dev: detach an iommu domain from a device
What is the criteria about whether an op should be iommu_ops or domain_ops
when
> From: Lu Baolu
> Sent: Monday, January 24, 2022 3:11 PM
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index aa5486243892..111b3e9c79bb 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -385,6 +385,14 @@ static inline void iommu_iotlb_gather_init(struct
>
> From: Lu Baolu
> Sent: Monday, January 24, 2022 3:11 PM
>
> Hi,
>
> The guest pasid and aux-domain related code are dead code in current
> iommu subtree. As we have reached a consensus that all these features
> should be based on the new iommufd framework (which is under active
>
On Mon, Jan 24, 2022 at 03:11:02PM +0800, Lu Baolu wrote:
> Add a domain specific callback set, domain_ops, for vendor iommu driver
> to provide domain specific operations. Move domain-specific callbacks
> from iommu_ops to the domain_ops and hook them when a domain is allocated.
Ah, that's what
On Mon, Jan 24, 2022 at 03:11:01PM +0800, Lu Baolu wrote:
> The common iommu_ops is hooked to both device and domain. When a helper
> has both device and domain pointer, the way to get the iommu_ops looks
> messy in iommu core. This sorts out the way to get iommu_ops. The device
> related helpers
On Mon, Jan 24, 2022 at 03:11:00PM +0800, Lu Baolu wrote:
> The supported page sizes of an iommu_domain are saved in the pgsize_bitmap
> field. Retrieve the value from the right place.
>
> Signed-off-by: Lu Baolu
> Reviewed-by: Robin Murphy
> Link:
>
Looks good,
Reviewed-by: Christoph Hellwig
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Looks good,
Reviewed-by: Christoph Hellwig
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iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
Looks good,
Reviewed-by: Christoph Hellwig
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iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
Looks good,
Reviewed-by: Christoph Hellwig
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