Re: [Freedreno] [PATCH 16/17] iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG

2021-03-10 Thread Will Deacon
On Wed, Mar 10, 2021 at 09:58:06AM +0100, Christoph Hellwig wrote: > On Fri, Mar 05, 2021 at 10:00:12AM +, Will Deacon wrote: > > > But one thing I'm not sure about is whether > > > IO_PGTABLE_QUIRK_ARM_OUTER_WBWA is something that other devices > > > *should* be using as well, but just haven't

Re: [Freedreno] [PATCH 16/17] iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG

2021-03-10 Thread Christoph Hellwig
On Fri, Mar 05, 2021 at 10:00:12AM +, Will Deacon wrote: > > But one thing I'm not sure about is whether > > IO_PGTABLE_QUIRK_ARM_OUTER_WBWA is something that other devices > > *should* be using as well, but just haven't gotten around to yet. > > The intention is certainly that this would be a

Re: [Freedreno] [PATCH 16/17] iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG

2021-03-04 Thread Rob Clark
On Thu, Mar 4, 2021 at 7:48 AM Robin Murphy wrote: > > On 2021-03-01 08:42, Christoph Hellwig wrote: > > Signed-off-by: Christoph Hellwig > > Moreso than the previous patch, where the feature is at least relatively > generic (note that there's a bunch of in-flight development around > DOMAIN_ATTR

Re: [PATCH 16/17] iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG

2021-03-04 Thread Robin Murphy
On 2021-03-01 08:42, Christoph Hellwig wrote: Signed-off-by: Christoph Hellwig Moreso than the previous patch, where the feature is at least relatively generic (note that there's a bunch of in-flight development around DOMAIN_ATTR_NESTING), I'm really not convinced that it's beneficial to b

[PATCH 16/17] iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG

2021-03-01 Thread Christoph Hellwig
Signed-off-by: Christoph Hellwig --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- drivers/iommu/arm/arm-smmu/arm-smmu.c | 40 +++-- drivers/iommu/iommu.c | 9 ++ include/linux/iommu.h | 9 +- 4 files changed, 29 insertions(+)