+Yong.Wu.
On Fri, 2020-01-03 at 17:26 +0100, Fabien Parent wrote:
> Add support for the IOMMU on MT8167
>
> Signed-off-by: Fabien Parent
> ---
> drivers/iommu/mtk_iommu.c | 11 ++-
> drivers/iommu/mtk_iommu.h | 1 +
> 2 files changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/d
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On Fri Feb 14 20, Robin Murphy wrote:
Hi Jerry,
On 2020-02-14 8:13 pm, Jerry Snitselaar wrote:
Hi Will,
On a gigabyte system with Cavium CN8xx, when doing a fio test against
an nvme drive we are seeing the following:
[ 637.161194] arm-smmu arm-smmu.1.auto: Unhandled context fault:
fsr=0x800
Presently, the default domain of an iommu_group is allocated during boot
time (i.e. when a device is being added to a group) and it cannot be
changed later. So, the device would typically be either in identity (also
known as pass_through) mode (controlled by "iommu=pt" kernel command line
argument)
Since user could change default domain type of an iommu group through
sysfs, reading the default domain type now requires taking the lock first.
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: S
When user requests kernel to change the default domain type of a group
through sysfs, kernel has to make sure that it's ok to change the domain
type of every device in the group to the requested domain (every device may
not support both the domain types i.e. DMA and identity). Hence, add a call
bac
Presently, the default domain of a group is allocated during boot time and it
cannot be changed later. So, the device would typically be either in identity
(pass_through) mode or the device would be in DMA mode as long as the
system is up and running. There is no way to change the default domain ty
The default domain type of an iommu group can be changed using file
"/sys/kernel/iommu_groups//type". Hence, document it's usage and
more importantly spell out it's limitations.
Cc: Christoph Hellwig
Cc: Joerg Roedel
Cc: Ashok Raj
Cc: Will Deacon
Cc: Lu Baolu
Cc: Sohil Mehta
Cc: Robin Murphy
The functionality needed for iommu_ops->dev_def_domain_type() is already
provided by device_def_domain_type() in intel_iommu.c. But, every call back
function in intel_iommu_ops starts with intel_iommu prefix, hence rename
device_def_domain_type() to intel_iommu_dev_def_domain_type() so that it
foll
On Fri, Feb 14, 2020 at 04:57:11PM +, Robin Murphy wrote:
> On 14/02/2020 4:04 pm, Jean-Philippe Brucker wrote:
> > With the built-in topology description in place, x86 platforms can now
> > use the virtio-iommu.
> >
> > Signed-off-by: Jean-Philippe Brucker
> > ---
> > drivers/iommu/Kconfig
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