modules/nixos/common/armv7l: vendor kernel patch

Author: zowoq

modules/nixos/common/armv7l.nix

@@ -16,13 +16,11 @@
         boot.kernelParams = [ "compat_uts_machine=armv7l" ];
 
         boot.kernelPatches = [
+          # https://lists.ubuntu.com/archives/kernel-team/2016-January/068203.html
+          # https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy/patch/?id=c1da50fa6eddad313360249cadcd4905ac9f82ea
           {
             name = "compat_uts_machine";
-            patch = pkgs.fetchpatch {
-              name = "compat_uts_machine.patch";
-              url = "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy/patch/?id=c1da50fa6eddad313360249cadcd4905ac9f82ea";
-              hash = "sha256-357+EzMLLt7IINdH0ENE+VcDXwXJMo4qiF/Dorp2Eyw=";
-            };
+            patch = ./compat_uts_machine.patch;
           }
         ];
 

modules/nixos/common/compat_uts_machine.patch

@@ -0,0 +1,26 @@
+diff --git a/kernel/sys.c b/kernel/sys.c
+index 259fda2..a2a48f0 100644
+--- a/kernel/sys.c
++++ b/kernel/sys.c
+@@ -1099,6 +1099,21 @@ out:
+ DECLARE_RWSEM(uts_sem);
+ 
+ #ifdef COMPAT_UTS_MACHINE
++static char compat_uts_machine[__OLD_UTS_LEN+1] = COMPAT_UTS_MACHINE;
++
++static int __init parse_compat_uts_machine(char *arg)
++{
++	strncpy(compat_uts_machine, arg, __OLD_UTS_LEN);
++	compat_uts_machine[__OLD_UTS_LEN] = 0;
++	return 0;
++}
++early_param("compat_uts_machine", parse_compat_uts_machine);
++
++#undef COMPAT_UTS_MACHINE
++#define COMPAT_UTS_MACHINE compat_uts_machine
++#endif
++
++#ifdef COMPAT_UTS_MACHINE
+ #define override_architecture(name) \
+ 	(personality(current->personality) == PER_LINUX32 && \
+ 	 copy_to_user(name->machine, COMPAT_UTS_MACHINE, \