From: Russell King Date: Mon, 8 Aug 2016 17:04:47 +0000 (+0100) Subject: crypto: caam - mark the hardware descriptor as cache line aligned X-Git-Tag: v4.9-rc1~53^2~111 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d7b24ed4a9a4250f483f4c2fea3588828ab43af2;p=karo-tx-linux.git 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 --- 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,