diff --git kernel/nvidia/nv-caps.c kernel/nvidia/nv-caps.c
index 90e866f..7151944 100644
--- kernel/nvidia/nv-caps.c
+++ kernel/nvidia/nv-caps.c
@@ -37,8 +37,12 @@ MODULE_PARM_DESC(nv_cap_enable_devfs, "Enable (1) or disable (0) nv-caps " \
 
 extern int NVreg_ModifyDeviceFiles;
 
+#if NV_IS_EXPORT_SYMBOL_PRESENT_close_fd
+#include <linux/fdtable.h>
+#else
 /* sys_close() or __close_fd() */
 #include <linux/syscalls.h>
+#endif
 
 #define NV_CAP_DRV_MINOR_COUNT 8192
 
@@ -581,12 +585,18 @@ void NV_API_CALL nv_cap_close_fd(int fd)
     }
 
 /*
- * From v4.17-rc1 kernels have stopped exporting sys_close(fd) and started
- * exporting __close_fd, as of this commit:
+ * From v4.17-rc1 (to v5.10.8) kernels have stopped exporting sys_close(fd)
+ * and started exporting __close_fd, as of this commit:
  * 2018-04-02 2ca2a09d6215 ("fs: add ksys_close() wrapper; remove in-kernel
- *  calls to sys_close()")
+ * calls to sys_close()")
+ * Kernels v5.11-rc1 onwards have stopped exporting __close_fd, and started
+ * exporting close_fd, as of this commit:
+ * 2020-12-20 8760c909f54a ("file: Rename __close_fd to close_fd and remove
+ * the files parameter")
  */
-#if NV_IS_EXPORT_SYMBOL_PRESENT___close_fd
+#if NV_IS_EXPORT_SYMBOL_PRESENT_close_fd
+    close_fd(fd);
+#elif NV_IS_EXPORT_SYMBOL_PRESENT___close_fd
     __close_fd(current->files, fd);
 #else
     sys_close(fd);
diff --git kernel/nvidia/nvidia.Kbuild kernel/nvidia/nvidia.Kbuild
index 8fc929e..193e7b3 100644
--- kernel/nvidia/nvidia.Kbuild
+++ kernel/nvidia/nvidia.Kbuild
@@ -173,6 +173,7 @@ NV_CONFTEST_SYMBOL_COMPILE_TESTS += is_export_symbol_present_tegra_dce_client_ip
 NV_CONFTEST_SYMBOL_COMPILE_TESTS += is_export_symbol_present_dram_clk_to_mc_clk
 NV_CONFTEST_SYMBOL_COMPILE_TESTS += is_export_symbol_present_get_dram_num_channels
 NV_CONFTEST_SYMBOL_COMPILE_TESTS += is_export_symbol_present_tegra_dram_types
+NV_CONFTEST_SYMBOL_COMPILE_TESTS += is_export_symbol_present_close_fd
 
 NV_CONFTEST_TYPE_COMPILE_TESTS += acpi_op_remove
 NV_CONFTEST_TYPE_COMPILE_TESTS += outer_flush_all
@@ -210,3 +211,6 @@ NV_CONFTEST_GENERIC_COMPILE_TESTS += get_user_pages
 NV_CONFTEST_GENERIC_COMPILE_TESTS += get_user_pages_remote
 NV_CONFTEST_GENERIC_COMPILE_TESTS += pm_runtime_available
 NV_CONFTEST_GENERIC_COMPILE_TESTS += vm_fault_t
+
+# vgpu unlock
+ldflags-y += -T /opt/vgpu_unlock/kern.ld
diff --git init-scripts/systemd/nvidia-vgpud.service init-scripts/systemd/nvidia-vgpud.service
index 2da8ff5..7b58195 100644
--- init-scripts/systemd/nvidia-vgpud.service
+++ init-scripts/systemd/nvidia-vgpud.service
@@ -13,8 +13,9 @@ Wants=syslog.target
 
 [Service]
 Type=forking
-ExecStart=/usr/bin/nvidia-vgpud
+ExecStart=/opt/vgpu_unlock/vgpu_unlock /usr/bin/nvidia-vgpud
 ExecStopPost=/bin/rm -rf /var/run/nvidia-vgpud
+Environment="__RM_NO_VERSION_CHECK=1"
 
 [Install]
 WantedBy=multi-user.target
diff --git init-scripts/systemd/nvidia-vgpu-mgr.service init-scripts/systemd/nvidia-vgpu-mgr.service
index 24276b3..b50e672 100644
--- init-scripts/systemd/nvidia-vgpu-mgr.service
+++ init-scripts/systemd/nvidia-vgpu-mgr.service
@@ -14,8 +14,9 @@ Wants=syslog.target
 [Service]
 Type=forking
 KillMode=process
-ExecStart=/usr/bin/nvidia-vgpu-mgr
+ExecStart=/opt/vgpu_unlock/vgpu_unlock /usr/bin/nvidia-vgpu-mgr
 ExecStopPost=/bin/rm -rf /var/run/nvidia-vgpu-mgr
+Environment="__RM_NO_VERSION_CHECK=1"
 
 [Install]
 WantedBy=multi-user.target
diff --git kernel/nvidia-vgpu-vfio/nvidia-vgpu-vfio.c kernel/nvidia-vgpu-vfio/nvidia-vgpu-vfio.c
index a3cc030..22666a2 100644
--- kernel/nvidia-vgpu-vfio/nvidia-vgpu-vfio.c
+++ kernel/nvidia-vgpu-vfio/nvidia-vgpu-vfio.c
@@ -2526,14 +2526,18 @@ static irqreturn_t vgpu_msix_handler(int irq, void *arg)
 
     if (pfile && pfile->f_op && pfile->f_op->write)
     {
-        old_fs = get_fs();
-        set_fs(KERNEL_DS);
+        #if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0))
+            old_fs = get_fs();
+            set_fs(KERNEL_DS);
+        #endif
 
         NV_SAVE_FLAGS(eflags);
         ret = pfile->f_op->write(pfile, (char *)&val, sizeof(val), &offset);
         NV_RESTORE_FLAGS(eflags);
 
-        set_fs(old_fs);
+        #if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0))
+            set_fs(old_fs);
+        #endif
     }
 
     return IRQ_HANDLED;
@@ -2816,8 +2820,10 @@ NV_STATUS nv_vgpu_inject_interrupt(void *vgpuRef)
     }
     NV_SPIN_UNLOCK_IRQRESTORE(&vgpu_dev->intr_info_lock, eflags);
 
-    old_fs = get_fs();
-    set_fs(KERNEL_DS);
+    #if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0))
+        old_fs = get_fs();
+        set_fs(KERNEL_DS);
+    #endif
 
     if (pfile->f_op && pfile->f_op->write)
        ret = pfile->f_op->write(pfile, (char *)&val, sizeof(val), &offset);
@@ -2827,7 +2833,9 @@ NV_STATUS nv_vgpu_inject_interrupt(void *vgpuRef)
     if (ret < 0)
         status = NV_ERR_INVALID_STATE;
 
-    set_fs(old_fs);
+    #if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0))
+        set_fs(old_fs);
+    #endif
 
     return status;
 }
diff --git kernel/nvidia/os-interface.c kernel/nvidia/os-interface.c
index 1484143..fb56ffc 100644
--- kernel/nvidia/os-interface.c
+++ kernel/nvidia/os-interface.c
@@ -16,7 +16,7 @@
 
 #include "nv-time.h"
 
-
+#include "/opt/vgpu_unlock/vgpu_unlock_hooks.c"