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* [PATCH v2 0/4] Fixes for dma-iommu swiotlb bounce buffers
@ 2021-07-09  3:34 David Stevens
  2021-07-09  3:34 ` [PATCH v2 1/4] dma-iommu: fix sync_sg with swiotlb David Stevens
                   ` (3 more replies)
  0 siblings, 4 replies; 12+ messages in thread
From: David Stevens @ 2021-07-09  3:34 UTC (permalink / raw)
  To: Robin Murphy
  Cc: Joerg Roedel, Will Deacon, Lu Baolu, Tom Murphy, iommu,
	linux-kernel, David Stevens

From: David Stevens <stevensd@chromium.org>

This patch set includes two fixes for bugs caused by mixing up the
original buffer's physical address and bounce buffer's physical address.
It also includes a performance fix that avoids an extra copy, as well as
a general cleanup fix.

The issues were found via code inspection, so I don't have any specific
use cases where things were not working, or any performance numbers.

v1 -> v2:
 - Split fixes into dedicated patches
 - Less invasive changes to fix arch_sync when mapping
 - Leave dev_is_untrusted check for strict iommu

David Stevens (4):
  dma-iommu: fix sync_sg with swiotlb
  dma-iommu: fix arch_sync_dma for map with swiotlb
  dma-iommu: pass SKIP_CPU_SYNC to swiotlb unmap
  dma-iommu: Check CONFIG_SWIOTLB more broadly

 drivers/iommu/dma-iommu.c | 63 ++++++++++++++++++++-------------------
 1 file changed, 33 insertions(+), 30 deletions(-)

-- 
2.32.0.93.g670b81a890-goog


^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2021-08-06 11:38 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-09  3:34 [PATCH v2 0/4] Fixes for dma-iommu swiotlb bounce buffers David Stevens
2021-07-09  3:34 ` [PATCH v2 1/4] dma-iommu: fix sync_sg with swiotlb David Stevens
2021-08-02 13:30   ` Will Deacon
2021-08-05  3:40     ` David Stevens
2021-07-09  3:35 ` [PATCH v2 2/4] dma-iommu: fix arch_sync_dma for map " David Stevens
2021-08-02 13:40   ` Will Deacon
2021-08-02 13:50     ` Will Deacon
2021-07-09  3:35 ` [PATCH v2 3/4] dma-iommu: pass SKIP_CPU_SYNC to swiotlb unmap David Stevens
2021-08-02 13:54   ` Will Deacon
2021-08-05  5:26     ` David Stevens
2021-08-06 11:38       ` Will Deacon
2021-07-09  3:35 ` [PATCH v2 4/4] dma-iommu: Check CONFIG_SWIOTLB more broadly David Stevens

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