In preparation for allowing the default domain type to be overridden,
this patch adds support for IOMMU_DOMAIN_IDENTITY domains to the
ARM SMMU driver.
An identity domain is created by placing the corresponding S2CR
registers into "bypass" mode, which allows transactions to flow through
the SMMU w
The ARM SMMU drivers provide a DOMAIN_ATTR_NESTING domain attribute,
which allows callers of the IOMMU API to request that the page table
for a domain is installed at stage-2, if supported by the hardware.
Since setting this attribute only makes sense for UNMANAGED domains,
this patch returns -ENO
The IOMMU core currently initialises the default domain for each group
to IOMMU_DOMAIN_DMA, under the assumption that devices will use
IOMMU-backed DMA ops by default. However, in some cases it is desirable
for the DMA ops to bypass the IOMMU for performance reasons, reserving
use of translation fo
In preparation for allowing the default domain type to be overridden,
this patch adds support for IOMMU_DOMAIN_IDENTITY domains to the
ARM SMMUv3 driver.
An identity domain is created by placing the corresponding stream table
entries into "bypass" mode, which allows transactions to flow through
th
Hi all,
This is version two of the patches previously posted here:
http://lists.infradead.org/pipermail/linux-arm-kernel/2017-January/481275.html
I've addressed the review feedback I receive there, but the main change
is that the SMMUv3 driver now handles passthrough domains independently
of t
arm_smmu_install_ste_for_dev cannot fail and always returns 0, however
the fact that it returns int means that callers end up implementing
redundant error handling code which complicates STE tracking and is
never executed.
This patch changes the return type of arm_smmu_install_ste_for_dev
to avoid
On Mon, Mar 06, 2017 at 12:04:39PM +0100, Joerg Roedel wrote:
> On Wed, Feb 22, 2017 at 05:39:44PM -0600, Bjorn Helgaas wrote:
> > [+cc Joerg, iommu list]
> >
> > On Wed, Feb 22, 2017 at 03:44:53PM -0500, Sinan Kaya wrote:
> > > On 2/22/2017 1:44 PM, Bjorn Helgaas wrote:
> > > > There is no way fo
4.10-stable review patch. If anyone has any objections, please let me know.
--
From: CQ Tang
commit aaa59306b0b7e0ca4ba92cc04c5db101cbb1c096 upstream.
Some of the macros are incorrect with wrong bit-shifts resulting in picking
the incorrect invalidation granularity. Incorrect
4.10-stable review patch. If anyone has any objections, please let me know.
--
From: Ashok Raj
commit 21e722c4c8377b5bc82ad058fed12165af739c1b upstream.
The check to set identity map for tylersburg is done too late. It needs
to be done before the check for identity_map domain
4.9-stable review patch. If anyone has any objections, please let me know.
--
From: Ashok Raj
commit 21e722c4c8377b5bc82ad058fed12165af739c1b upstream.
The check to set identity map for tylersburg is done too late. It needs
to be done before the check for identity_map domain i
4.9-stable review patch. If anyone has any objections, please let me know.
--
From: CQ Tang
commit aaa59306b0b7e0ca4ba92cc04c5db101cbb1c096 upstream.
Some of the macros are incorrect with wrong bit-shifts resulting in picking
the incorrect invalidation granularity. Incorrect S
4.4-stable review patch. If anyone has any objections, please let me know.
--
From: CQ Tang
commit aaa59306b0b7e0ca4ba92cc04c5db101cbb1c096 upstream.
Some of the macros are incorrect with wrong bit-shifts resulting in picking
the incorrect invalidation granularity. Incorrect S
4.4-stable review patch. If anyone has any objections, please let me know.
--
From: Ashok Raj
commit 21e722c4c8377b5bc82ad058fed12165af739c1b upstream.
The check to set identity map for tylersburg is done too late. It needs
to be done before the check for identity_map domain i
Hi Robin,
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Thursday, March 09, 2017 7:51 PM
> To: j...@8bytes.org
> Cc: iommu@lists.linux-foundation.org; will.dea...@arm.com;
> marc.zyng...@arm.com; Gabriele Paoloni; John Garry; Shameerali Kolothum
> Thodi
>
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