[PATCH v2 2/2] iommu: Add gfp parameter to io_pgtable_ops->map()

[Will Deacon]

On Fri, Jun 12, 2020 at 11:39:55AM +0800, Baolin Wang wrote:
> Now the ARM page tables are always allocated by GFP_ATOMIC parameter,
> but the iommu_ops->map() function has been added a gfp_t parameter by
> commit 781ca2de89ba ("iommu: Add gfp parameter to iommu_ops::map"),
> thus io_pgtable_ops->map() should use the gfp parameter passed from
> iommu_ops->map() to allocate page pages, which can avoid wasting the
> memory allocators atomic pools for some non-atomic contexts.
> 
> Signed-off-by: Baolin Wang <baolin.wang at linux.alibaba.com>
> ---
>  drivers/gpu/drm/panfrost/panfrost_mmu.c |  2 +-
>  drivers/iommu/arm-smmu-v3.c             |  2 +-
>  drivers/iommu/arm-smmu.c                |  2 +-
>  drivers/iommu/io-pgtable-arm-v7s.c      | 18 +++++++++---------
>  drivers/iommu/io-pgtable-arm.c          | 18 +++++++++---------
>  drivers/iommu/ipmmu-vmsa.c              |  2 +-
>  drivers/iommu/msm_iommu.c               |  2 +-
>  drivers/iommu/mtk_iommu.c               |  2 +-
>  drivers/iommu/qcom_iommu.c              |  2 +-
>  include/linux/io-pgtable.h              |  2 +-
>  10 files changed, 26 insertions(+), 26 deletions(-)

I was a bit nervous about us passing GFP_KERNEL with a spinlock held, but
it looks like you've checked all the callsites and it looks fine to me, so:

Acked-by: Will Deacon <will at kernel.org>

Joerg -- not sure what you want to do with this one, as it's likely to
conflict (trivially) with unrelated driver changes.

Will