Hi Robin,
>Hi Robin,
>
Hi Sricharan,
On 02/12/16 14:55, Sricharan R wrote:
> This series is a resend of the V5 that Mitch sent sometime back [2]
> All the patches are the same and i have just rebased. Not sure why this
> finally did not make it last time. The last patch
Currently the driver sets all the device transactions privileges
to UNPRIVILEGED, but there are cases where the iommu masters wants
to isolate privileged supervisor and unprivileged user.
So don't override the privileged setting to unprivileged, instead
set it to default as incoming and let it be c
From: Robin Murphy
Now that proper privileged mappings can be requested via IOMMU_PRIV,
unconditionally overriding the incoming PRIVCFG becomes the wrong thing
to do, so stop it.
This reverts commit df5e1a0f2a2d779ad467a691203bcbc74d75690e.
Signed-off-by: Robin Murphy
---
drivers/iommu/arm-sm
From: Mitchel Humpherys
The PL330 is hard-wired such that instruction fetches on both the
manager and channel threads go out onto the bus with the "privileged"
bit set. This can become troublesome once there is an IOMMU or other
form of memory protection downstream, since those will typically be
From: Mitchel Humpherys
The newly added DMA_ATTR_PRIVILEGED is useful for creating mappings that
are only accessible to privileged DMA engines. Implement it in
dma-iommu.c so that the ARM64 DMA IOMMU mapper can make use of it.
Reviewed-by: Robin Murphy
Tested-by: Robin Murphy
Acked-by: Will D
From: Mitchel Humpherys
This patch adds the DMA_ATTR_PRIVILEGED attribute to the DMA-mapping
subsystem.
Some advanced peripherals such as remote processors and GPUs perform
accesses to DMA buffers in both privileged "supervisor" and unprivileged
"user" modes. This attribute is used to indicate
From: Robin Murphy
The short-descriptor format also allows privileged-only mappings, so
let's wire it up.
Signed-off-by: Robin Murphy
Tested-by: Sricharan R
---
drivers/iommu/io-pgtable-arm-v7s.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/io-pgtable
This series is a resend of the V5 that Mitch sent sometime back [2]
All the patches are the same and i have just rebased. Redid patch [3],
as it does not apply in this code base. Added a couple of more patches
[4], [5] from Robin for adding the privileged attributes to armv7s format
and arm-smmuv3
From: Jeremy Gebben
Allow the creation of privileged mode mappings, for stage 1 only.
Reviewed-by: Robin Murphy
Tested-by: Robin Murphy
Acked-by: Will Deacon
Signed-off-by: Jeremy Gebben
---
drivers/iommu/io-pgtable-arm.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git
From: Mitchel Humpherys
Add the IOMMU_PRIV attribute, which is used to indicate privileged
mappings.
Reviewed-by: Robin Murphy
Tested-by: Robin Murphy
Signed-off-by: Mitchel Humpherys
Acked-by: Will Deacon
---
include/linux/iommu.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include
Hi Joerg/David,
Just wondering if you have any more comments?
Thanks,
Jacob
On Tue, 6 Dec 2016 10:14:23 -0800
Jacob Pan wrote:
> Different encodings are used to represent supported PASID bits
> and number of PASID table entries.
> The current code assigns ecap_pss directly to extended contex
The generic command buffer entry is 128 bits (16 bytes), so the offset
of tail and head pointer should be 16 bytes aligned and increased with
0x10 per command.
When cmd buf is full, head = (tail + 0x10) % CMD_BUFFER_SIZE.
So when left space of cmd buf should be able to store only two
command, we
Hi Don,
On 11/12/2016 03:05, Don Dutile wrote:
> On 12/08/2016 04:36 AM, Auger Eric wrote:
>> Hi,
>>
>> On 15/11/2016 14:09, Eric Auger wrote:
>>> Following LPC discussions, we now report reserved regions through
>>> iommu-group sysfs reserved_regions attribute file.
>>
>>
>> While I am respinning
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