intel-iommu: Use cmpxchg64_local() for setting PTEs

Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

drivers/pci/intel-iommu.c

@@ -1682,7 +1682,7 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn,
 		/* We don't need lock here, nobody else
 		 * touches the iova range
 		 */
-		tmp = cmpxchg64(&pte->val, 0ULL, pteval);
+		tmp = cmpxchg64_local(&pte->val, 0ULL, pteval);
 		if (tmp) {
 			static int dumps = 5;
 			printk(KERN_CRIT "ERROR: DMA PTE for vPFN 0x%lx already set (to %llx not %llx)\n",