IOMMU_RESV_NOMAP is used to tag reserved IOVAs that are not supposed to be IOMMU mapped. IOMMU_RESV_MSI tags IOVAs corresponding to MSIs that need to be IOMMU mapped.
IOMMU_RESV_MASK allows to check if the IOVA is reserved. Signed-off-by: Eric Auger <eric.au...@redhat.com> --- include/linux/iommu.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 7f6ebd0..02cf565 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -32,6 +32,10 @@ #define IOMMU_NOEXEC (1 << 3) #define IOMMU_MMIO (1 << 4) /* e.g. things like MSI doorbells */ +#define IOMMU_RESV_MASK 0x300 /* Reserved IOVA mask */ +#define IOMMU_RESV_NOMAP (1 << 8) /* IOVA that cannot be mapped */ +#define IOMMU_RESV_MSI (1 << 9) /* MSI region transparently mapped */ + struct iommu_ops; struct iommu_group; struct bus_type; -- 1.9.1
