Whilst most IOMMU mappings should probably be non-executable, there may be cases (HSA?) where executable mappings are required.
This patch introduces a new mapping flag, IOMMU_EXEC, to indicate that the mapping should be mapped as executable. Signed-off-by: Will Deacon <[email protected]> --- include/linux/iommu.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index a444c790fa72..709a697c4e02 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -24,9 +24,10 @@ #include <linux/types.h> #include <trace/events/iommu.h> -#define IOMMU_READ (1) -#define IOMMU_WRITE (2) -#define IOMMU_CACHE (4) /* DMA cache coherency */ +#define IOMMU_READ (1 << 0) +#define IOMMU_WRITE (1 << 1) +#define IOMMU_CACHE (1 << 2) /* DMA cache coherency */ +#define IOMMU_EXEC (1 << 3) struct iommu_ops; struct iommu_group; -- 1.8.2.2 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
