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Commit 4496a777 authored by Jordan Crouse's avatar Jordan Crouse
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ion: Set the private page flag on secure chunks 



Set the private page flag on on secure chunks to give other entities
a clue that the memory is special.

Change-Id: Ic0dedbad4b41a874a3f80dec75d0721d30307094
Signed-off-by: default avatarJordan Crouse <jcrouse@codeaurora.org>
parent f7d25bdf

drivers/staging/android/ion/msm/secure_buffer.c

+11 −0
Original line number Diff line number Diff line
@@ -132,6 +132,17 @@ 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);

	}