Linux 4.7-rc6 Released, Bigger Than The Earlier RCs

[phoronix]

Phoronix: Linux 4.7-rc6 Released, Bigger Than The Earlier RCs

Linus Torvalds has released the sixth weekly test version to the Linux 4.7 kernel...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-4.7-rc6-Released

[ThoreauHD]

May not be surprising, but I can't get the latest Nvidia(367) drivers to load on this kernel. Makes alot of calls the kernel doesn't recognize. Seems power management has been altered drastically and the module just craps itself on insmod/modprobe.

[towo2099]

May not be surprising, but I can't get the latest Nvidia(367) drivers to load on this kernel. Makes alot of calls the kernel doesn't recognize. Seems power management has been altered drastically and the module just craps itself on insmod/modprobe.

Hm, i can't see your problems here.

~
towo:Defiant> inxi -xxSG
System:    Host: Defiant Kernel: 4.7.0-rc6-siduction-amd64 x86_64 (64 bit gcc: 6.1.1)
           Desktop: Cinnamon 3.0.4 (Gtk 3.20.6) dm: lightdm
           Distro: siduction 13.2.0 December - xfce - (201312310323)
Graphics:  Card: NVIDIA GM107 [GeForce GTX 750 Ti] bus-ID: 01:00.0 chip-ID: 10de:1380
           Display Server: X.Org 1.18.3 driver: nvidia Resolution: [email protected]
           GLX Renderer: GeForce GTX 750 Ti/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 367.27 Direct Rendering: Yes

Kernel 4.7-rcX only needs little patching:

diff -ruN NVIDIA-Linux-x86_64-367.27/kernel/nvidia-drm/nvidia-drm-fb.c NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-drm/nvidia-drm-fb.c
--- NVIDIA-Linux-x86_64-367.27/kernel/nvidia-drm/nvidia-drm-fb.c    2016-06-10 02:38:43.000000000 +0200
+++ NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-drm/nvidia-drm-fb.c    2016-06-13 18:40:49.915398269 +0200
@@ -20,6 +20,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/version.h>
 #include "conftest.h" /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
 
 #if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
@@ -114,7 +115,11 @@
      * We don't support any planar format, pick up first buffer only.
      */
 
+    #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
     gem = drm_gem_object_lookup(dev, file, cmd->handles[0]);
+    #else
+    gem = drm_gem_object_lookup(file, cmd->handles[0]);
+    #endif
 
     if (gem == NULL)
     {
diff -ruN NVIDIA-Linux-x86_64-367.27/kernel/nvidia-drm/nvidia-drm-gem.c NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-drm/nvidia-drm-gem.c
--- NVIDIA-Linux-x86_64-367.27/kernel/nvidia-drm/nvidia-drm-gem.c    2016-06-10 02:38:43.000000000 +0200
+++ NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-drm/nvidia-drm-gem.c    2016-06-13 18:33:02.080694923 +0200
@@ -20,6 +20,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/version.h>
 #include "conftest.h" /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
 
 #if defined(NV_DRM_AVAILABLE)
@@ -408,7 +409,11 @@
 
     mutex_lock(&dev->struct_mutex);
 
+    #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
     gem = drm_gem_object_lookup(dev, file, handle);
+    #else
+    gem = drm_gem_object_lookup(file, handle);
+    #endif
 
     if (gem == NULL)
     {
diff -ruN NVIDIA-Linux-x86_64-367.27/kernel/nvidia-uvm/uvm8_gpu.c NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-uvm/uvm8_gpu.c
--- NVIDIA-Linux-x86_64-367.27/kernel/nvidia-uvm/uvm8_gpu.c    2016-06-10 02:37:08.000000000 +0200
+++ NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-uvm/uvm8_gpu.c    2016-06-13 18:35:10.922001304 +0200
@@ -21,6 +21,7 @@
 
 *******************************************************************************/
 
+#include <linux/version.h>
 #include "nv_uvm_interface.h"
 #include "uvm8_api.h"
 #include "uvm8_channel.h"
@@ -638,7 +639,11 @@
                    gpu->id, uvm_gpu_retained_count(gpu));
 
     // All channels should have been removed before the retained count went to 0
+    #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
     UVM_ASSERT(radix_tree_empty(&gpu->instance_ptr_table));
+    #else
+    UVM_ASSERT(radix_tree_empty_nv(&gpu->instance_ptr_table));
+    #endif
 
     // Remove the GPU from the table.
     uvm_spin_lock_irqsave(&g_uvm_global.gpu_table_lock);
diff -ruN NVIDIA-Linux-x86_64-367.27/kernel/nvidia-uvm/uvm_linux.h NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-uvm/uvm_linux.h
--- NVIDIA-Linux-x86_64-367.27/kernel/nvidia-uvm/uvm_linux.h    2016-06-10 02:37:08.000000000 +0200
+++ NVIDIA-Linux-x86_64-367.27.patched/kernel/nvidia-uvm/uvm_linux.h    2016-06-13 18:33:31.394326324 +0200
@@ -29,6 +29,7 @@
 //
 //
 
+#include <linux/version.h>
 #ifndef _UVM_LINUX_H
 #define _UVM_LINUX_H
 
@@ -563,7 +564,11 @@
     INIT_RADIX_TREE(tree, GFP_NOWAIT);
 }
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
 static bool radix_tree_empty(struct radix_tree_root *tree)
+#else
+static bool radix_tree_empty_nv(struct radix_tree_root *tree)
+#endif
 {
     void *dummy;
     return radix_tree_gang_lookup(tree, &dummy, 0, 1) == 0;

No issues for me so far.

[ThoreauHD]

I tested it on 4.7-rc6, not 4.6-rcX. I went back to 4.6.3, and it works fine. Driver source is Phoronix's own Graphics Drivers on launchpad.net/PPA on Linux Mint 18/Ubuntu 16. I'll just wait for the driver or kernel to get sorted in the repositories. I stopped doing out of band patching because I can't remember all the crap I'll break with a apt-get dist-upgrade if I don't.

[towo2099]

Sorry, 4.6-rcX was a typo, i mean 4.7-rcX. But as you can see, i have 4.7-rc6 running with the patched driver.