Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Reviewed-by: Lu Baolu
Signed-off-by: Sai Praneeth Prakhya
---
.../ABI/testing/sysfs-kernel-iommu_groups | 30 +++
1 file changed, 30 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
b/Documentation/AB
oup_show_type() doesn't try to derefernce stale pointers.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Reviewed-by: Lu Baolu
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 2 ++
1 file cha
el-iommu_groups" for more
information.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Reviewed-by: Lu Baolu
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 225 +
changes are in 2nd patch of V2.
7. Rename device_def_domain_type() to dev_def_domain_type()
8. Remove example from documentation
9. Change the value written to file "/sys/kernel/iommu_groups//type"
from "dma" to "DMA".
Changes from RFC:
---------
1. Added su
es from RFC:
-
1. Added support for "auto" type, so that kernel selects one among identity or
dma mode.
2. Use "system_state" in device_def_domain_type() instead of an argument.
Sai Praneeth Prakhya (3):
iommu: Add support to change default domain of a
Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
.../ABI/testing/sysfs-kernel-iommu_groups | 30 +++
1 file changed, 30 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
b/Documentation/ABI/testing/sysfs-kernel-iom
el-iommu_groups" for more
information.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 215 +-
1 file
oup_show_type() doesn't try to derefernce stale pointers.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 2 ++
1 file changed, 2 insertions(+)
d
Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
.../ABI/testing/sysfs-kernel-iommu_groups | 30 +++
1 file changed, 30 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
b/Documentation/ABI/testing/sysfs-kernel-iom
quot;auto" type, so that kernel selects one among identity or
dma mode.
2. Use "system_state" in device_def_domain_type() instead of an argument.
Sai Praneeth Prakhya (3):
iommu: Add support to change default domain of an iommu_group
iommu: Take lock before reading iommu_group d
edel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 211 +-
1 file changed, 210 insertions(+), 1 deletion(-)
diff --git a/drivers/iom
oup_show_type() doesn't try to derefernce stale pointers.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 2 ++
1 file changed, 2 insertions(+)
d
dce8d6964ebd ("iommu/amd: Convert to probe/release_device()
call-backs")
[2] commit e5d1841f18b2 ("iommu/vt-d: Convert to probe/release_device()
call-backs")
[3] commit 327d5b2fee91 ("iommu/vt-d: Allow 32bit devices to uses DMA
domain")
Cc: Joerg Roedel
Cc: Lu Baol
/ABI/testing/sysfs-kernel-iommu_groups" for more information.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 227
: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 56a29076871f..10e14cb9c32b 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -424,6 +424,7 @@ static ssize_t
call
back function that could be implemented per architecture that performs the
above check.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
include/linux/iommu.h | 3 +
| 8 +-
drivers/iommu/iommu.c | 229 -
include/linux/iommu.h | 3 +
4 files changed, 265 insertions(+), 4 deletions(-)
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: L
hil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
.../ABI/testing/sysfs-kernel-iommu_groups | 29 ++
1 file changed, 29 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
b/Documentation/ABI/testing/sysfs-kerne
it
follows the same semantics.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu.c | 8 +---
1 file changed, 5 insertions(+), 3 deletions(-)
d
I don't know why people are being dropped randomly from CC'list. So, adding
them back
+ Sohil, Jacob, Joerg, Baolu
> > +What: /sys/kernel/iommu_groups//type
> > +Date: August 2019
> > +KernelVersion: v5.4
> > +Contact: Sai
olu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
.../ABI/testing/sysfs-kernel-iommu_groups | 35 +++
1 file changed, 35 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
b/Documentation/ABI/testing/sysfs
sysfs-kernel-iommu_groups" for more information.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 232 +
ignored if
the system is already up and running.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu.c | 35 +-
same
semantics.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu.c | 9 ++---
include/linux/iommu.h | 4
2 files change
x27;t tested on other architectures.
Sai Praneeth Prakhya (4):
iommu/vt-d: Modify device_def_domain_type() to use at runtime
iommu: Add device_def_domain_type() call back function to iommu_ops
iommu: Add support to change default domain of an iommu_group
iommu: Document usage of &q
first.
Cc: Joerg Roedel
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu-debugfs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/intel-iommu-debugfs.c
b/drivers/iommu/intel-iommu-debug
same semantics.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu.c | 9 ++---
include/linux/iommu.h | 3 +++
2 files changed, 9 inser
rom dma
to identity. Only for x86_64 (i.e. intel_iommu/vt-d). Haven't tested for other
architectures.
Sai Praneeth Prakhya (4):
iommu/vt-d: Modify device_def_domain_type() to use at runtime
iommu: Add device_def_domain_type() call back function to iommu_ops
iommu: Add support to change defa
umentation/ABI/testing/sysfs-kernel-iommu_groups" for more
information.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/iommu.c | 178
olu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by: Sai Praneeth Prakhya
---
.../ABI/testing/sysfs-kernel-iommu_groups | 34 +++
1 file changed, 34 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
b/Documentation/ABI/testing/sysfs
arguments. Hence, use 'startup' argument to modify
device_def_domain_type() such that command line argument settings apply only at
boot time.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
Cc: Jacob Pan
Signed-off-by:
On Mon, 2019-06-10 at 11:45 -0700, Mehta, Sohil wrote:
> On Sun, 2019-06-09 at 10:38 +0800, Lu Baolu wrote:
> > static int __init si_domain_init(int hw)
> > @@ -3306,14 +3252,13 @@ static int __init init_dmars(void)
> > if (pasid_supported(iommu))
> > intel_
On Sat, 2019-06-08 at 09:27 +0200, h...@lst.de wrote:
> Just curious, what exactly is the use case? Explaining how someone
> would wan to use this should drive the way we design an interface for it.
Makes sense.
Some example use cases:
1. Assume an SR-IOV device and if the admin decides to use s
> It's interesting to see this from a fresh angle which isn't clouded by
> other SoC GPU details - thanks for the proposal! A couple more thoughts
> jump out immediately...
>
Thanks a lot! for jumping in and providing your valuable insights :)
Sorry! for taking time to reply on this. Did some
ID is defaulted to
-1 indicating that PASID and it's related fields are invalid.
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Reviewed-by: Lu Baolu
Reviewed-by: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
g fault (PASID directory pointer is undefined for
non-scalable DMAR's). To fix this, dereference PASID directory pointer only when
1. PASID is supported and
2. PASID is enabled.
This patch is tested on
1. Non-scalable DMAR with and without iommu=pt
2. Scalable DMAR with and without iommu=pt
Baolu
Cc: Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Reviewed-by: Lu Baolu
Reviewed-by: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu-debugfs.c | 65 +++--
1 file changed, 41 insertions(+), 24 deletion
Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Reviewed-by: Lu Baolu
Reviewed-by: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu.c | 6 +-
drivers/iommu/intel-pasid.c | 17 -
drivers/iommu/intel-pasid.h
Baolu
Cc: Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Reviewed-by: Lu Baolu
Reviewed-by: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu-debugfs.c | 65 +++--
1 file changed, 41 insertions(+), 24 deletion
ID is defaulted to
-1 indicating that PASID and it's related fields are invalid.
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Reviewed-by: Lu Baolu
Reviewed-by: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Reviewed-by: Lu Baolu
Reviewed-by: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-pasid.c | 17 -
drivers/iommu/intel-pasid.h | 26 ++
2 files changed, 26 inser
es from V1 to V2:
--
1. Make my name consistent in "From" and "Signed-off-by"
2. Fix comment regarding scalable mode context entries
3. Add reviewed by tags
Sai Praneeth Prakhya (3):
iommu/vt-d: Modify the format of intel DMAR tables dump
iommu/vt-d: Intro
d hence in such cases PASID is defaulted to
-1 indicating that PASID and it's related fields are invalid.
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-
c: Lu Baolu
Cc: Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-pasid.c | 17 -
drivers/iommu/intel-pasid.h | 26 ++
2 files changed, 26 insertions(+), 17 deletions(-)
diff --
Cc: Ashok Raj
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: David Woodhouse
Cc: Jacob Pan
Cc: Andy Shevchenko
Signed-off-by: Sai Praneeth Prakhya
---
drivers/iommu/intel-iommu-debugfs.c | 65 +++--
1 file changed, 41 insertions(+), 24 deletions(-)
diff --git a/drivers/i
ff-by: Sai Praneeth Prakhya
--
2.7.4
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