[PATCH v2 4/4] iommu/arm-smmu-v3: Enable HTTU for stage1 with io-pgtable mapping

[Jason Gunthorpe]

On Thu, Feb 22, 2024 at 09:49:23AM +0000, Shameer Kolothum wrote:
> From: Kunkun Jiang <jiangkunkun at huawei.com>
> 
> If io-pgtable quirk flag indicates support for hardware update of
> dirty state, enable HA/HD bits in the SMMU CD and also set the DBM
> bit in the page descriptor.
> 
> And now report the dirty page tracking capability of SMMUv3.
> 
> Co-developed-by: Keqian Zhu <zhukeqian1 at huawei.com>
> Signed-off-by: Keqian Zhu <zhukeqian1 at huawei.com>
> Signed-off-by: Kunkun Jiang <jiangkunkun at huawei.com>
> Signed-off-by: Joao Martins <joao.m.martins at oracle.com>
> Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi at huawei.com>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 15 +++++++++++++++
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h |  3 +++
>  drivers/iommu/io-pgtable-arm.c              |  5 ++++-
>  3 files changed, 22 insertions(+), 1 deletion(-)

Reviewed-by: Jason Gunthorpe <jgg at nvidia.com>

Jason