Merge pull request #64 from alex--m/topic/fix_v6_5

Resolve build errors on kernel 6.4 and 6.5

Author: hjelmn

kernel/xpmem_attach.c

@@ -507,7 +507,7 @@ xpmem_attach(struct file *file, xpmem_apid_t apid, off_t offset, size_t size,
 						     vaddr + size);
 		xpmem_mmap_write_unlock(current->mm);
 		for ( ; existing_vma && existing_vma->vm_start < vaddr + size
-				; existing_vma = existing_vma->vm_next) {
+				; existing_vma = find_vma(current->mm, existing_vma->vm_end)) {
 			if (xpmem_is_vm_ops_set(existing_vma)) {
 				ret = -EINVAL;
 				goto out_3;
@@ -527,8 +527,15 @@ xpmem_attach(struct file *file, xpmem_apid_t apid, off_t offset, size_t size,
 	xpmem_mmap_write_unlock(current->mm);
 
 	vma->vm_private_data = att;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 3, 0)
+	vm_flags_set(vma,
+		VM_DONTCOPY | VM_DONTDUMP | VM_IO | VM_DONTEXPAND | VM_PFNMAP);
+#else
 	vma->vm_flags |=
 	    VM_DONTCOPY | VM_DONTDUMP | VM_IO | VM_DONTEXPAND | VM_PFNMAP;
+#endif
+
 	vma->vm_ops = &xpmem_vm_ops;
 
 	att->at_vma = vma;

kernel/xpmem_mmu_notifier.c

@@ -109,7 +109,7 @@ xpmem_invalidate_range(struct mmu_notifier *mn,
 		return;
 	}
 
-	for ( ; vma && vma->vm_start < end; vma = vma->vm_next) {
+	for ( ; vma && vma->vm_start < end; vma = find_vma(mm, vma->vm_end)) {
 		unsigned long vm_start;
 		unsigned long vm_end;
 

kernel/xpmem_pfn.c

@@ -162,7 +162,11 @@ xpmem_vaddr_to_pte_offset(struct mm_struct *mm, u64 vaddr, u64 *offset)
 	}
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 4, 0)
+	pte = pte_offset_kernel(pmd, vaddr);
+#else
 	pte = pte_offset_map(pmd, vaddr);
+#endif
 	if (!pte_present(*pte))
 		return NULL;
 
@@ -216,7 +220,11 @@ xpmem_vaddr_to_pte_size(struct mm_struct *mm, u64 vaddr, u64 *size)
 		return NULL;
 	}
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 4, 0)
+	pte = pte_offset_kernel(pmd, vaddr);
+#else
 	pte = pte_offset_map(pmd, vaddr);
+#endif
 	if (!pte_present(*pte)) {
 		*size = PAGE_SIZE;
 		return NULL;
@@ -268,10 +276,12 @@ xpmem_pin_page(struct xpmem_thread_group *tg, struct task_struct *src_task,
 	foll_write = (vma->vm_flags & VM_WRITE) ? FOLL_WRITE : 0;
 
 	/* get_user_pages()/get_user_pages_remote() faults and pins the page */
-#if   LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
+#if   LINUX_VERSION_CODE >= KERNEL_VERSION(6, 5, 0)
+	ret = get_user_pages_remote (src_mm, vaddr, 1, foll_write, &page, NULL);
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
 	ret = get_user_pages_remote (src_mm, vaddr, 1, foll_write, &page, NULL,
 				     NULL);
-#elif   LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
 	ret = get_user_pages_remote (src_task, src_mm, vaddr, 1, foll_write,
 				     &page, NULL, NULL);
 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)