gpu:nvgpu: add support for unmapped ptes

Add support for unmapped ptes during gmmu map.

Bug 1587825

Change-Id: I6e42ef58bae70ce29e5b82852f77057855ca9971
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/696507
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 9e3a362f..b04ef2e3 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -104,6 +104,8 @@ struct nvgpu_gpu_zbc_query_table_args {
 #define NVGPU_GPU_FLAGS_SUPPORT_SYNC_FENCE_FDS          (1 << 3)
 /* NVGPU_IOCTL_CHANNEL_CYCLE_STATS is available */
 #define NVGPU_GPU_FLAGS_SUPPORT_CYCLE_STATS             (1 << 4)
+/* MAP_BUFFER_EX with unmapped PTE */
+#define NVGPU_GPU_FLAGS_SUPPORT_UNMAPPED_PTE            (1 << 5)
 
 struct nvgpu_gpu_characteristics {
         __u32 arch;