On 2016/11/21 18:01, Lorenzo Pieralisi wrote:
IORT tables provide data that allow the kernel to carry out device ID mappings between endpoints and system components (eg interrupt controllers, IOMMUs). When the mapping for a given device ID is carried out, the translation mechanism is done on a per-subsystem basis rather than a component subtype (ie the IOMMU kernel layer will look for mappings from a device to all IORT node types corresponding to IOMMU components), therefore the corresponding mapping API should work on a range (ie mask) of IORT node types corresponding to a common set of components (eg IOMMUs) rather than a specific node type. Upgrade the IORT iort_node_map_rid() API to work with a type mask instead of a single node type so that it can be used for mappings that span multiple components types (ie IOMMUs). Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> Reviewed-by: Tomasz Nowicki <tn@xxxxxxxxxxxx> Tested-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> Tested-by: Tomasz Nowicki <tn@xxxxxxxxxxxx> Cc: Hanjun Guo <hanjun.guo@xxxxxxxxxx> Cc: Tomasz Nowicki <tn@xxxxxxxxxxxx> Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx> --- drivers/acpi/arm64/iort.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-)
Acked-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> Thanks Hanjun -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
