diff options
| author | David Rientjes <[email protected]> | 2020-04-14 17:04:58 -0700 |
|---|---|---|
| committer | Christoph Hellwig <[email protected]> | 2020-04-25 13:17:05 +0200 |
| commit | 76a19940bd62a81148c303f3df6d0cee9ae4b509 (patch) | |
| tree | 71caddd9ff61acea7bb981c723e33575278431c4 /drivers/fpga/fpga-bridge.c | |
| parent | 54adadf9b08571fb8b11dc9d0d3a2ddd39825efd (diff) | |
dma-direct: atomic allocations must come from atomic coherent pools
When a device requires unencrypted memory and the context does not allow
blocking, memory must be returned from the atomic coherent pools.
This avoids the remap when CONFIG_DMA_DIRECT_REMAP is not enabled and the
config only requires CONFIG_DMA_COHERENT_POOL. This will be used for
CONFIG_AMD_MEM_ENCRYPT in a subsequent patch.
Keep all memory in these pools unencrypted. When set_memory_decrypted()
fails, this prohibits the memory from being added. If adding memory to
the genpool fails, and set_memory_encrypted() subsequently fails, there
is no alternative other than leaking the memory.
Signed-off-by: David Rientjes <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
Diffstat (limited to 'drivers/fpga/fpga-bridge.c')
0 files changed, 0 insertions, 0 deletions