On Mon, Jan 11, 2021 at 07:45:02PM +0530, Sai Prakash Ranjan wrote: > commit ecd7274fb4cd ("iommu: Remove unused IOMMU_SYS_CACHE_ONLY flag") > removed unused IOMMU_SYS_CACHE_ONLY prot flag and along with it went > the memory type setting required for the non-coherent masters to use > system cache. Now that system cache support for GPU is added, we will > need to set the right PTE attribute for GPU buffers to be sys cached. > Without this, the system cache lines are not allocated for GPU. > > So the patches in this series introduces a new prot flag IOMMU_LLC, > renames IO_PGTABLE_QUIRK_ARM_OUTER_WBWA to IO_PGTABLE_QUIRK_PTW_LLC > and makes GPU the user of this protection flag. Hi Sai, Thank you for the patchset! Are you planning to refresh it, as it does not apply anymore? Thanks, Georgi > > The series slightly depends on following 2 patches posted earlier and > is based on msm-next branch: > * https://lore.kernel.org/patchwork/patch/1363008/ > * https://lore.kernel.org/patchwork/patch/1363010/ > > Sai Prakash Ranjan (3): > iommu/io-pgtable: Rename last-level cache quirk to > IO_PGTABLE_QUIRK_PTW_LLC > iommu/io-pgtable-arm: Add IOMMU_LLC page protection flag > drm/msm: Use IOMMU_LLC page protection flag to map gpu buffers > > drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 3 +++ > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- > drivers/gpu/drm/msm/msm_iommu.c | 3 +++ > drivers/gpu/drm/msm/msm_mmu.h | 4 ++++ > drivers/iommu/io-pgtable-arm.c | 9 ++++++--- > include/linux/io-pgtable.h | 6 +++--- > include/linux/iommu.h | 6 ++++++ > 7 files changed, 26 insertions(+), 7 deletions(-) > > > base-commit: 00fd44a1a4700718d5d962432b55c09820f7e709 > -- > QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member > of Code Aurora Forum, hosted by The Linux Foundation >