diff options
| author | Joerg Roedel | 2015-12-21 13:23:59 +0100 |
|---|---|---|
| committer | Joerg Roedel | 2015-12-28 17:18:50 +0100 |
| commit | 84b3a0bc88534d9e49d1642957f64db61a3aa5c4 (patch) | |
| tree | 4e19eaf27b3d1c341c85a62c7691ab20d8886569 /drivers/iommu/amd_iommu.c | |
| parent | iommu/amd: Flush IOMMU TLB on __map_single error path (diff) | |
| download | kernel-qcow2-linux-84b3a0bc88534d9e49d1642957f64db61a3aa5c4.tar.gz kernel-qcow2-linux-84b3a0bc88534d9e49d1642957f64db61a3aa5c4.tar.xz kernel-qcow2-linux-84b3a0bc88534d9e49d1642957f64db61a3aa5c4.zip | |
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>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 42c0a81ba9b3..69021ec79da9 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -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); } /* |