From d7b24ed4a9a4250f483f4c2fea3588828ab43af2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 8 Aug 2016 18:04:47 +0100 Subject: [PATCH] crypto: caam - mark the hardware descriptor as cache line aligned Mark the hardware descriptor as being cache line aligned; on DMA incoherent architectures, the hardware descriptor should sit in a separate cache line from the CPU accessed data to avoid polluting the caches. Signed-off-by: Russell King Signed-off-by: Herbert Xu --- drivers/crypto/caam/caamhash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 683a945e10aa..faf3d1bbcce9 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -604,7 +604,7 @@ struct ahash_edesc { int src_nents; int sec4_sg_bytes; struct sec4_sg_entry *sec4_sg; - u32 hw_desc[DESC_JOB_IO_LEN / sizeof(u32)]; + u32 hw_desc[DESC_JOB_IO_LEN / sizeof(u32)] ____cacheline_aligned; }; static inline void ahash_unmap(struct device *dev, -- 2.20.1