iommu: Remove unused IOMMU_SYS_CACHE_ONLY flag (ecd7274f) · Commits · 戴 / test

The IOMMU_SYS_CACHE_ONLY flag was never exposed via the DMA API and has no in-tree users. Remove it. Cc: Robin Murphy <robin.murphy@arm.com> Cc: "Isaac J. Manjarres" <isaacm@codeaurora.org> Cc: Joerg Roedel <joro@8bytes.org> Cc: Rob Clark <robdclark@gmail.com> Reviewed-by:

Christoph Hellwig <hch@lst.de> Reviewed-by:

Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Signed-off-by:

Will Deacon <will@kernel.org>

drivers/iommu/io-pgtable-arm.c

+0 −3

Original line number	Diff line number	Diff line
		@@ -438,9 +438,6 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data,
		else if (prot & IOMMU_CACHE)
		pte \|= (ARM_LPAE_MAIR_ATTR_IDX_CACHE
		<< ARM_LPAE_PTE_ATTRINDX_SHIFT);
		else if (prot & IOMMU_SYS_CACHE_ONLY)
		pte \|= (ARM_LPAE_MAIR_ATTR_IDX_INC_OCACHE
		<< ARM_LPAE_PTE_ATTRINDX_SHIFT);
		}

		if (prot & IOMMU_CACHE)

include/linux/iommu.h

+0 −6

Original line number	Diff line number	Diff line
		@@ -31,12 +31,6 @@
		* if the IOMMU page table format is equivalent.
		*/
		#define IOMMU_PRIV (1 << 5)
		/*
		* Non-coherent masters can use this page protection flag to set cacheable
		* memory attributes for only a transparent outer level of cache, also known as
		* the last-level or system cache.
		*/
		#define IOMMU_SYS_CACHE_ONLY (1 << 6)

		struct iommu_ops;
		struct iommu_group;

Admin message