add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/xen/privcmd-buf.c
..
..
@@ -140,8 +140,7 @@
140
140
 	if (!(vma->vm_flags & VM_SHARED))
141
141
 		return -EINVAL;
142
142
 
143
-	vma_priv = kzalloc(sizeof(*vma_priv) + count * sizeof(void *),
144
-			   GFP_KERNEL);
143
+	vma_priv = kzalloc(struct_size(vma_priv, pages, count), GFP_KERNEL);
145
144
 	if (!vma_priv)
146
145
 		return -ENOMEM;
147
146
 
..
..
@@ -166,12 +165,8 @@
166
165
 	if (vma_priv->n_pages != count)
167
166
 		ret = -ENOMEM;
168
167
 	else
169
-		for (i = 0; i < vma_priv->n_pages; i++) {
170
-			ret = vm_insert_page(vma, vma->vm_start + i * PAGE_SIZE,
171
-					     vma_priv->pages[i]);
172
-			if (ret)
173
-				break;
174
-		}
168
+		ret = vm_map_pages_zero(vma, vma_priv->pages,
169
+						vma_priv->n_pages);
175
170
 
176
171
 	if (ret)
177
172
 		privcmd_buf_vmapriv_free(vma_priv);