buildfix_kernel_5.8.patch

diff -Naur a/nvidia-modules-common.mk b/nvidia-modules-common.mk
--- a/nvidia-modules-common.mk
+++ b/nvidia-modules-common.mk
@@ -222,6 +222,7 @@
 define BUILD_MODULE_RULE
  $(1): build-sanity-checks $(3)
 	@echo "NVIDIA: calling KBUILD..."; \
+	touch .nv-kernel.o.cmd; \
 	$$(MAKE) "CC=$$(CC)" NV_MODULE_SUFFIX=$$(strip $(2)) $$(KBUILD_PARAMS) modules; \
 	echo "NVIDIA: left KBUILD."; \
 	if ! [ -f $(1) ]; then \
diff -Naru a/nv-linux.h b/nv-linux.h
--- a/nv-linux.h	2020-08-08 03:48:46.894783237 +0300
+++ b/nv-linux.h	2020-08-08 15:43:05.252047541 +0300
@@ -669,11 +669,19 @@
 #  define KM_FREE_RECORD(a,b,c)
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
+#define NV_VMALLOC(ptr, size)                     \
+    {                                             \
+        (ptr) = __vmalloc(size, GFP_KERNEL);      \
+        VM_ALLOC_RECORD(ptr, size, "vm_vmalloc"); \
+    }
+#else
 #define NV_VMALLOC(ptr, size)                               \
     {                                                       \
         (ptr) = __vmalloc(size, GFP_KERNEL, PAGE_KERNEL);   \
         VM_ALLOC_RECORD(ptr, size, "vm_vmalloc");           \
     }
+#endif
 
 #define NV_VFREE(ptr, size)                         \
     {                                               \
diff -Naru a/os-mlock.c b/os-mlock.c
--- a/os-mlock.c	2020-04-16 15:37:41.000000000 +0300
+++ b/os-mlock.c	2020-08-08 15:47:44.793311179 +0300
@@ -44,11 +44,19 @@
         return rmStatus;
     }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
+    down_read(&mm->mmap_lock);
+    ret = NV_GET_USER_PAGES((unsigned long)address,
+                            page_count, write, force, user_pages, NULL);
+    up_read(&mm->mmap_lock);
+    pinned = ret;
+#else
     down_read(&mm->mmap_sem);
     ret = NV_GET_USER_PAGES((unsigned long)address,
                             page_count, write, force, user_pages, NULL);
     up_read(&mm->mmap_sem);
     pinned = ret;
+#endif
 
     if (ret < 0)
     {
diff -Naru a/uvm/nvidia_uvm_lite_api.c b/uvm/nvidia_uvm_lite_api.c
--- a/uvm/nvidia_uvm_lite_api.c	2020-04-16 15:37:41.000000000 +0300
+++ b/uvm/nvidia_uvm_lite_api.c	2020-08-08 15:28:40.110186418 +0300
@@ -30,6 +30,10 @@
 #include "uvm_gpu_ops_tests.h"
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
+#define mmap_sem mmap_lock
+#endif
+
 //
 // nvidia_uvm_lite_api.c
 //