gpu: nvgpu: Increase small page aperture

Increase the small page aperture to 56GB to facilitate easier
fixed address mapping for userspace (primarily CUDA).

Bug 200320732

Change-Id: I1f0aaa4f28c8a294cc880b35f26942b562396b48
Signed-off-by: Sunny He <suhe@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1502432
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index 93baa943..7b2c0dfc 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -311,12 +311,12 @@ static inline int bar1_aperture_size_mb_gk20a(void)
 #define NV_MM_DEFAULT_KERNEL_SIZE (1ULL << 32)
 
 /*
- * When not using unified address spaces the bottom 16GB of the space are used
- * for small pages and the remaining high memory is used for large pages.
+ * When not using unified address spaces, the bottom 56GB of the space are used
+ * for small pages, and the remaining high memory is used for large pages.
  */
 static inline u64 __nv_gmmu_va_small_page_limit(void)
 {
-        return ((u64)SZ_1G * 16);
+        return ((u64)SZ_1G * 56);
 }
 
 enum gmmu_pgsz_gk20a __get_pte_size_fixed_map(struct vm_gk20a *vm,