iommu/amd: Implement flush queue

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With the flush queue the IOMMU TLBs will not be flushed at
every dma-ops unmap operation. The unmapped ranges will be
queued and flushed at once, when the queue is full. This
makes unmapping operations a lot faster (on average) and
restores the performance of the old address allocator.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Joerg Roedel 2016-07-06 13:07:22 +02:00

parent f1eae7c580

commit b1516a1465

1 changed files with 67 additions and 4 deletions

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drivers/iommu/amd_iommu.c

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