intel-iommu: dump mappings but don't die on pte already set (1bf20f0d) · Commits · e / devices / android_kernel_teracube_2e

drivers/pci/intel-iommu.c

+10 −1

Original line number	Diff line number	Diff line
		@@ -1673,7 +1673,16 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn,
		/* We don't need lock here, nobody else
		* touches the iova range
		*/
		BUG_ON(dma_pte_addr(pte));
		if (unlikely(dma_pte_addr(pte))) {
		static int dumps = 5;
		printk(KERN_CRIT "ERROR: DMA PTE for vPFN 0x%lx already set (to %llx)\n",
		iov_pfn, pte->val);
		if (dumps) {
		dumps--;
		debug_dma_dump_mappings(NULL);
		}
		WARN_ON(1);
		}
		pte->val = pteval;
		pte++;
		if (!nr_pages \|\|