Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 84b3a0bc authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Flush the IOMMU TLB before the addresses are freed 



This allows to keep the bitmap_lock only for a very short
period of time.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 53b3b65a

drivers/iommu/amd_iommu.c

+4 −4
Original line number Diff line number Diff line
@@ -2527,14 +2527,14 @@ static void __unmap_single(struct dma_ops_domain *dma_dom, 
		start += PAGE_SIZE;

	}



	SUB_STATS_COUNTER(alloced_io_mem, size);



	dma_ops_free_addresses(dma_dom, dma_addr, pages);



	if (amd_iommu_unmap_flush || dma_dom->need_flush) {

		domain_flush_pages(&dma_dom->domain, flush_addr, size);

		dma_dom->need_flush = false;

	}



	SUB_STATS_COUNTER(alloced_io_mem, size);



	dma_ops_free_addresses(dma_dom, dma_addr, pages);

}



/*