diff options
| author |   David Rientjes <rientjes@google.com> | 2020-06-11 12:20:32 -0700 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2020-06-23 14:13:54 +0200 |
| commit | 1a2b3357e860d890f8045367b179c7e7e802cd71 (patch) | |
| tree | 9620e8050e5cba9e7ae8efa923d19d2c6b64ee29 /kernel/dma | |
| parent | dma-direct: check return value when encrypting or decrypting memory (diff) | |
| download | wireguard-linux-1a2b3357e860d890f8045367b179c7e7e802cd71.tar.xz wireguard-linux-1a2b3357e860d890f8045367b179c7e7e802cd71.zip | |
dma-direct: add missing set_memory_decrypted() for coherent mapping
When a coherent mapping is created in dma_direct_alloc_pages(), it needs
to be decrypted if the device requires unencrypted DMA before returning.
Fixes: 3acac065508f ("dma-mapping: merge the generic remapping helpers into dma-direct")
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/direct.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 2f69bfdbe315..93f578a8e613 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -195,6 +195,12 @@ void *dma_direct_alloc_pages(struct device *dev, size_t size, __builtin_return_address(0)); if (!ret) goto out_free_pages; + if (force_dma_unencrypted(dev)) { + err = set_memory_decrypted((unsigned long)ret, + 1 << get_order(size)); + if (err) + goto out_free_pages; + } memset(ret, 0, size); goto done; } |