gpu: nvgpu: Increase VA space to 40 bits

Now that the buddy allocator is merged we can increase the VA space
without dramatically increasing memory usage by the allocator.

40 bits is the max VA space available on gk20a and gm20b.

Change-Id: I7bc8d86e35b28f041e9a435f2571c8288970c8ee
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/745076
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/771152
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index 3af35b26..5c6c285a 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -359,7 +359,7 @@ static inline int max_vaddr_bits_gk20a(void)
 /*
  * Amount of the GVA space we actually use is smaller than the available space.
  */
-#define NV_GMMU_VA_RANGE        37
+#define NV_GMMU_VA_RANGE        40
 
 /*
  * The bottom 16GB of the space are used for small pages, the remaining high