diff --git a/.SRCINFO b/.SRCINFO
index 37f659b..2106c5a 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,7 +1,7 @@
 pkgbase = nvidia-340xx
 	pkgdesc = NVIDIA drivers for linux, 340xx legacy branch
 	pkgver = 340.108
-	pkgrel = 8
+	pkgrel = 9
 	url = https://www.nvidia.com/
 	arch = x86_64
 	license = custom
@@ -12,8 +12,10 @@ pkgbase = nvidia-340xx
 	options = !strip
 	source = https://us.download.nvidia.com/XFree86/Linux-x86_64/340.108/NVIDIA-Linux-x86_64-340.108-no-compat32.run
 	source = kernel-5.7.patch::https://gitlab.manjaro.org/packages/extra/linux57-extramodules/nvidia-340xx/-/raw/master/kernel-5.7.patch?inline=false
-	sha256sums = 995d44fef587ff5284497a47a95d71adbee0c13020d615e940ac928f180f5b77
-	sha256sums = c5f4e2d8840bef97b077da2ed05340a047a8ec420feab6153f7a59e0c547f877
+	source = buildfix_kernel_5.8.patch
+	b2sums = 6538bbec53b10f8d20977f9b462052625742e9709ef06e24cf2e55de5d0c55f1620a4bb21396cfd89ebc54c32f921ea17e3e47eaa95abcbc24ecbd144fb89028
+	b2sums = e1e3d2dd5f4c79bb6c0235236ba5c092d3d2ff07175125947d01817f014652b5ebf93710270189cc06c03a96172627adeaf495607c360f2470f62bca2a6a55ba
+	b2sums = bd75129644bd11caed8d9d1e2d5bbbced59bcdcb7784c3defe9a48b4c4de09adde59626456b0bc8c789d2e1e4844c21a7f2e5795d9eefbb548914af1ca8a60ae
 
 pkgname = nvidia-340xx
 	pkgdesc = NVIDIA drivers for linux, 340xx legacy branch
diff --git a/PKGBUILD b/PKGBUILD
index 4af47de..1a45b8d 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -6,7 +6,7 @@
 pkgbase=nvidia-340xx
 pkgname=(nvidia-340xx nvidia-340xx-dkms)
 pkgver=340.108
-pkgrel=8
+pkgrel=9
 pkgdesc="NVIDIA drivers for linux, 340xx legacy branch"
 arch=('x86_64')
 url="https://www.nvidia.com/"
@@ -16,9 +16,11 @@ license=('custom')
 options=(!strip)
 source=("https://us.download.nvidia.com/XFree86/Linux-x86_64/${pkgver}/NVIDIA-Linux-x86_64-${pkgver}-no-compat32.run"
   kernel-5.7.patch::https://gitlab.manjaro.org/packages/extra/linux57-extramodules/nvidia-340xx/-/raw/master/kernel-5.7.patch?inline=false
+  buildfix_kernel_5.8.patch
 )
-sha256sums=('995d44fef587ff5284497a47a95d71adbee0c13020d615e940ac928f180f5b77'
-            'c5f4e2d8840bef97b077da2ed05340a047a8ec420feab6153f7a59e0c547f877')
+b2sums=('6538bbec53b10f8d20977f9b462052625742e9709ef06e24cf2e55de5d0c55f1620a4bb21396cfd89ebc54c32f921ea17e3e47eaa95abcbc24ecbd144fb89028'
+        'e1e3d2dd5f4c79bb6c0235236ba5c092d3d2ff07175125947d01817f014652b5ebf93710270189cc06c03a96172627adeaf495607c360f2470f62bca2a6a55ba'
+        'bd75129644bd11caed8d9d1e2d5bbbced59bcdcb7784c3defe9a48b4c4de09adde59626456b0bc8c789d2e1e4844c21a7f2e5795d9eefbb548914af1ca8a60ae')
 _pkg="NVIDIA-Linux-x86_64-${pkgver}-no-compat32"
 
 # default is 'linux' substitute custom name here
@@ -34,6 +36,11 @@ prepare() {
   # https://gitlab.manjaro.org/packages?utf8=%E2%9C%93&filter=nvidia-340xx
   (patch -p1 --no-backup-if-mismatch -i "$srcdir"/kernel-5.7.patch)
 
+  # https://launchpad.net/~kelebek333/+archive/ubuntu/nvidia-legacy/+packages
+  # the following was extracted from
+  # https://launchpadlibrarian.net/492468557/nvidia-graphics-drivers-340_340.108-1lmtrfocal3_340.108-2lmtrfocal.diff.gz
+  (cd kernel && patch -p1 --no-backup-if-mismatch -i "$srcdir"/buildfix_kernel_5.8.patch)
+
   cp -a kernel kernel-dkms
 }
 
diff --git a/buildfix_kernel_5.8.patch b/buildfix_kernel_5.8.patch
new file mode 100644
index 0000000..1b2f0f8
--- /dev/null
+++ b/buildfix_kernel_5.8.patch
@@ -0,0 +1,71 @@
+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
+ //