[PATCH v2 2/3] drm/amdkfd: svm unmap use page aligned address

[Philip Yang]

svm_range_unmap_from_gpus uses page aligned start, end address, the end
address is inclusive.

Fixes: 38c55f6719f7 ("drm/amdkfd: Handle lack of READ permissions in SVM 
mapping")
Signed-off-by: Philip Yang <philip.y...@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index e8a15751c125..0aadd20be56a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1723,10 +1723,9 @@ static int svm_range_validate_and_map(struct mm_struct 
*mm,
                                svm_range_lock(prange);
                                if (vma->vm_flags & VM_WRITE)
                                        pr_debug("VM_WRITE without VM_READ is 
not supported");
-                               s = max(start, prange->start);
-                               e = min(end, prange->last);
-                               if (e >= s)
-                                       r = svm_range_unmap_from_gpus(prange, 
s, e,
+                               s = max(addr >> PAGE_SHIFT, prange->start);
+                               e = s + npages - 1;
+                               r = svm_range_unmap_from_gpus(prange, s, e,
                                                       
KFD_SVM_UNMAP_TRIGGER_UNMAP_FROM_CPU);
                                svm_range_unlock(prange);
                                /* If unmap returns non-zero, we'll bail on the 
next for loop
-- 
2.49.0