[PATCH v5 4/4] crypto: Add Allwinner Security System crypto accelerator
From: Maxime Ripard <hidden>
Date: 2014-10-30 17:20:11
Also in:
linux-crypto, linux-devicetree, lkml
On Fri, Oct 24, 2014 at 08:52:26PM +0200, Corentin LABBE wrote:
On 10/21/14 21:11, Maxime Ripard wrote:quoted
Hi Corentin, Thanks for resending it. On Sun, Oct 19, 2014 at 04:16:22PM +0200, LABBE Corentin wrote:quoted
Add support for the Security System included in Allwinner SoC A20. The Security System is a hardware cryptographic accelerator that support AES/MD5/SHA1/DES/3DES/PRNG algorithms. Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> --- drivers/crypto/Kconfig | 17 ++ +static int sunxi_ss_aes_poll_atomic(struct ablkcipher_request *areq) +{ + u32 spaces; + struct scatterlist *in_sg = areq->src; + struct scatterlist *out_sg = areq->dst; + void *src_addr; + void *dst_addr; + unsigned int ileft = areq->nbytes; + unsigned int oleft = areq->nbytes; + unsigned int todo; + u32 *src32; + u32 *dst32; + u32 rx_cnt = 32; + u32 tx_cnt = 0; + int i; + + src_addr = kmap_atomic(sg_page(in_sg)) + in_sg->offset;Where does this scatter_list is coming from? Can it even be allocated in highmem?With AF_ALG and cryptodev, the SG is in highmem. Verified with some PageHighMem().
Then fix AF_ALG and cryptodev, because all of the other drivers might be affected. Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20141030/4edec1c4/attachment.sig>