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path: root/drivers/misc/cxl/cxllib.c
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Diffstat (limited to 'drivers/misc/cxl/cxllib.c')
-rw-r--r--drivers/misc/cxl/cxllib.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/misc/cxl/cxllib.c b/drivers/misc/cxl/cxllib.c
index 5dba23ca2e5f..dc9bc1807fdf 100644
--- a/drivers/misc/cxl/cxllib.c
+++ b/drivers/misc/cxl/cxllib.c
@@ -219,8 +219,17 @@ int cxllib_handle_fault(struct mm_struct *mm, u64 addr, u64 size, u64 flags)
down_read(&mm->mmap_sem);
- for (dar = addr; dar < addr + size; dar += page_size) {
- if (!vma || dar < vma->vm_start || dar > vma->vm_end) {
+ vma = find_vma(mm, addr);
+ if (!vma) {
+ pr_err("Can't find vma for addr %016llx\n", addr);
+ rc = -EFAULT;
+ goto out;
+ }
+ /* get the size of the pages allocated */
+ page_size = vma_kernel_pagesize(vma);
+
+ for (dar = (addr & ~(page_size - 1)); dar < (addr + size); dar += page_size) {
+ if (dar < vma->vm_start || dar >= vma->vm_end) {
vma = find_vma(mm, addr);
if (!vma) {
pr_err("Can't find vma for addr %016llx\n", addr);