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: Joerg Roedel <jroedel@suse.de>
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 42c0a81ba..69021ec 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2527,14 +2527,14 @@
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);
}
/*