Add all 6.1x support patches

Also, add an option to disable them to gracefully still allow the module to build on 6.8 and earlier kernels.

PKGBUILD

@@ -1,5 +1,12 @@
 # Maintainer: Lily Tsuru <lily.modeco80@protonmail.ch>
 
+# Options
+
+# Use patches for running on 6.1x Linux kernels
+# (default true). Set to any other value during makepkg invocation
+# to disable the new patches.
+[[ -z "${_use_new_patches}" ]] && _use_new_patches="true"
+
 pkgbase='nvidia-merged'
 pkgname=('lib32-nvidia-merged-utils' 'lib32-opencl-nvidia-merged' 'nvidia-merged-dkms' 'nvidia-merged-settings' 'nvidia-merged-utils' 'opencl-nvidia-merged' 'vgpu-unlock-rs')
 pkgrel=2
@@ -32,6 +39,7 @@ source=(
     'nvidia-iommu-api-fix.patch'
     'nvidia-drm-defs-fix.patch'
     'nvidia-eventfd-fix.patch'
+    'nvidia-follow-pfn-reimpl.patch'
 
     'nvidia-smi'
     'nvidia-vgpu.conf'
@@ -51,6 +59,7 @@ sha256sums=('ae6b1cf5cc5e177e5502ebed4b64f058524bf5514e1d6cda911e2966b2749b16'
             '437232dfa868999dd252ee95ee88625fb3e8231c0b705510904b6822512c56ba'
             'f1e9e0d4ebbd35d14ef28c79f8ed8a0c22ff5e49765dd42119106f39078b4682'
             'a26f0ee66e140be1f93e52ff965da59490a33b13f40c56629071eab2553ce48f'
+            'bd3f975e4b87bdc5135f4268bb99c6ae9c2719448221e80409bc10bdb9493764'
             'eb51808257e7898d37d4575f40ada424cabf5dcad61017dd677ff5a0b25dead4'
             '5ea0d9edfcf282cea9b204291716a9a4d6d522ba3a6bc28d78edf505b6dc7949'
             'eafb28461fbe8a37cef3121f4b0ad53ad459ba389d9afb91e79c6c8d93ba5ea9'
@@ -90,6 +99,12 @@ prepare() {
     patch -p1 < ../dkms-conftest-iosys-fix.patch
     patch -p1 < ../nvidia-iommu-api-fix.patch
     patch -p1 < ../nvidia-drm-defs-fix.patch
+    
+    [[ "${_use_new_patches}" == "true" ]] && {
+         echo "Enabling linux 6.1x support patches"
+         patch -p1 < ../nvidia-eventfd-fix.patch
+         patch -p1 < ../nvidia-follow-pfn-reimpl.patch
+    };
  
     bsdtar -xf nvidia-persistenced-init.tar.bz2
 

nvidia-follow-pfn-reimpl.patch

@@ -0,0 +1,32 @@
+diff --git a/kernel-orig/nvidia/os-mlock.c b/kernel/nvidia/os-mlock.c
+index e378245..37c5daf 100644
+--- a/kernel-orig/nvidia/os-mlock.c
++++ b/kernel/nvidia/os-mlock.c
+@@ -30,11 +30,22 @@ static inline int nv_follow_pfn(struct vm_area_struct *vma,
+                                 unsigned long address,
+                                 unsigned long *pfn)
+ {
+-#if defined(NV_UNSAFE_FOLLOW_PFN_PRESENT)
+-    return unsafe_follow_pfn(vma, address, pfn);
+-#else
+-    return follow_pfn(vma, address, pfn);
+-#endif
++    /* follow_pfn was removed in Linux 6.10. */
++    int status = 0;
++    spinlock_t *ptl;
++    pte_t *ptep;
++
++    if (!(vma->vm_flags & (VM_IO | VM_PFNMAP)))
++        return status;
++
++    status = follow_pte(vma, address, &ptep, &ptl);
++    if (status)
++        return status;
++    *pfn = pte_pfn(ptep_get(ptep));
++
++    // The lock is acquired inside follow_pte()
++    pte_unmap_unlock(ptep, ptl);
++    return 0;
+ }
+ 
+ /*!