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| author | Sasha Levin <sashal@kernel.org> | 2022-05-18 22:28:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-25 10:17:55 +0300 |
| commit | e2cfa7b0935c2445cd7a2919f91831a0f9821c3d (patch) | |
| tree | 586591cc91cbadf7b1523d72dc3589c7247d1f08 /include/linux | |
| parent | fe5ac3da50a92764bd534a39f851c744f0d4e2c3 (diff) | |
| download | linux-e2cfa7b0935c2445cd7a2919f91831a0f9821c3d.tar.xz | |
Revert "swiotlb: fix info leak with DMA_FROM_DEVICE"
This reverts commit d4d975e7921079f877f828099bb8260af335508f.
Upstream had a follow-up fix, revert, and a semi-reverted-revert.
Instead of going through this chain which is more painful to backport,
I'm just going to revert this original commit and pick the final one.
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/dma-mapping.h | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index a9361178c5db..a7d70cdee25e 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -62,14 +62,6 @@ #define DMA_ATTR_PRIVILEGED (1UL << 9) /* - * This is a hint to the DMA-mapping subsystem that the device is expected - * to overwrite the entire mapped size, thus the caller does not require any - * of the previous buffer contents to be preserved. This allows - * bounce-buffering implementations to optimise DMA_FROM_DEVICE transfers. - */ -#define DMA_ATTR_OVERWRITE (1UL << 10) - -/* * A dma_addr_t can hold any valid DMA or bus address for the platform. It can * be given to a device to use as a DMA source or target. It is specific to a * given device and there may be a translation between the CPU physical address |