diff --git a/drivers/gpu/nvgpu/include/nvgpu/posix/sizes.h b/drivers/gpu/nvgpu/include/nvgpu/posix/sizes.h
index 3fda75748..76cc18a0b 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/posix/sizes.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/posix/sizes.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2019, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -31,6 +31,7 @@
 #define SZ_1M		(1UL << 20)
 #define SZ_16M		(SZ_1M << 4)
 #define SZ_256M		(SZ_1M << 8)
+#define SZ_512M		(SZ_1M << 9)
 
 #define SZ_1G		(1UL << 30)
 #define SZ_4G		(SZ_1G << 2)
diff --git a/drivers/gpu/nvgpu/include/nvgpu/posix/types.h b/drivers/gpu/nvgpu/include/nvgpu/posix/types.h
index 931fbd50a..2e7227d60 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/posix/types.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/posix/types.h
@@ -228,4 +228,6 @@ static inline bool IS_ERR_OR_NULL(const void *ptr)
 	return (ptr == NULL) || IS_ERR_VALUE((unsigned long)ptr);
 }
 
+#define ERESTARTSYS ERESTART
+
 #endif