fixup! rust: drm: Add GPUVM Manager abstraction

Author: hoshinolina

rust/kernel/drm/gpuvm.rs

@@ -22,7 +22,7 @@ use crate::drm::gem::IntoGEMObject;
 use core::cell::UnsafeCell;
 use core::marker::{PhantomData, PhantomPinned};
 use core::mem::ManuallyDrop;
-use core::ops::{Deref, DerefMut};
+use core::ops::{Deref, DerefMut, Range};
 use core::ptr::NonNull;
 
 /// Trait that must be implemented by DRM drivers to represent a DRM GpuVm (a GPU address space).
@@ -373,15 +373,12 @@ impl<T: DriverGpuVm> GpuVm<T> {
         self.gpuvm.get()
     }
 
-    #[allow(clippy::too_many_arguments)]
     pub fn new<E>(
         name: &'static CStr,
         dev: &device::Device<T::Driver>,
         r_obj: &<T::Driver as drv::Driver>::Object,
-        start_offset: u64,
-        range: u64,
-        reserve_offset: u64,
-        reserve_range: u64,
+        range: Range<u64>,
+        reserve_range: Range<u64>,
         inner: impl PinInit<T, E>,
     ) -> Result<ARef<GpuVm<T>>>
     where
@@ -399,10 +396,10 @@ impl<T: DriverGpuVm> GpuVm<T> {
                         0,
                         dev.raw_mut(),
                         r_obj.gem_obj() as *const _ as *mut _,
-                        start_offset,
-                        range,
-                        reserve_offset,
-                        reserve_range,
+                        range.start,
+                        range.end - range.start,
+                        reserve_range.start,
+                        reserve_range.end - reserve_range.start,
                         &Self::OPS
                     );
                     Ok(())