diff mbox series

[v2,14/19] acrn: Use the new follow_pfnmap API

Message ID 20240826204353.2228736-15-peterx@redhat.com (mailing list archive)
State New
Headers show
Series mm: Support huge pfnmaps | expand

Commit Message

Peter Xu Aug. 26, 2024, 8:43 p.m. UTC 
Use the new API that can understand huge pfn mappings.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 drivers/virt/acrn/mm.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
diff mbox series

Patch

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 &&