diff options
| author | Jordan Crouse <jcrouse@codeaurora.org> | 2014-12-09 10:22:42 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:04:20 -0700 |
| commit | cf29b8cc9f71202944dc7937d3ddac998f1144bc (patch) | |
| tree | aa7eb94de5cd2617d906243954c85b25679795c0 | |
| parent | fae73f3a16f8c02ff5ff74089475a5bf34d88da3 (diff) | |
ion: Set the private page flag on secure chunks
Set the private page flag on secure chunks to give other entities
a clue that the memory is special.
Change-Id: Ic0dedbad4b41a874a3f80dec75d0721d30307094
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
| -rw-r--r-- | drivers/staging/android/ion/msm/secure_buffer.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/staging/android/ion/msm/secure_buffer.c b/drivers/staging/android/ion/msm/secure_buffer.c index d605de5e19f0..ee583220c60a 100644 --- a/drivers/staging/android/ion/msm/secure_buffer.c +++ b/drivers/staging/android/ion/msm/secure_buffer.c @@ -145,6 +145,17 @@ static int secure_buffer_change_table(struct sg_table *table, int lock) ret = secure_buffer_change_chunk(virt_to_phys(chunk_list), nchunks, V2_CHUNK_SIZE, lock); + if (!ret) { + /* + * Set or clear the private page flag to communicate the + * status of the chunk to other entities + */ + if (lock) + SetPagePrivate(sg_page(sg)); + else + ClearPagePrivate(sg_page(sg)); + } + kfree(chunk_list); } |