diff options
Diffstat (limited to 'drivers/virt/acrn/mm.c')
| -rw-r--r-- | drivers/virt/acrn/mm.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/virt/acrn/mm.c b/drivers/virt/acrn/mm.c index db8ff1d0ac23..4c2f28715b70 100644 --- a/drivers/virt/acrn/mm.c +++ b/drivers/virt/acrn/mm.c @@ -177,9 +177,7 @@ int acrn_vm_ram_map(struct acrn_vm *vm, struct acrn_vm_memmap *memmap) vma = vma_lookup(current->mm, memmap->vma_base); if (vma && ((vma->vm_flags & VM_PFNMAP) != 0)) { unsigned long start_pfn, cur_pfn; - spinlock_t *ptl; bool writable; - pte_t *ptep; if ((memmap->vma_base + memmap->len) > vma->vm_end) { mmap_read_unlock(current->mm); @@ -187,16 +185,20 @@ int acrn_vm_ram_map(struct acrn_vm *vm, struct acrn_vm_memmap *memmap) } for (i = 0; i < nr_pages; i++) { - ret = follow_pte(vma, memmap->vma_base + i * PAGE_SIZE, - &ptep, &ptl); + struct follow_pfnmap_args args = { + .vma = vma, + .address = memmap->vma_base + i * PAGE_SIZE, + }; + + ret = follow_pfnmap_start(&args); if (ret) break; - cur_pfn = pte_pfn(ptep_get(ptep)); + cur_pfn = args.pfn; if (i == 0) start_pfn = cur_pfn; - writable = !!pte_write(ptep_get(ptep)); - pte_unmap_unlock(ptep, ptl); + writable = args.writable; + follow_pfnmap_end(&args); /* Disallow write access if the PTE is not writable. */ if (!writable && |