diff options
| author | Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com> | 2015-07-13 19:51:39 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-07-14 09:56:48 +0300 |
| commit | 2d6f0600b2cd755959527230ef5a6fba97bb762a (patch) | |
| tree | daecab27712eeca306e75969d9d0ef988feda758 /drivers/crypto/vmx/aes_ctr.c | |
| parent | 72cd7b44bc99376b3f3c93cedcd052663fcdf705 (diff) | |
| download | linux-2d6f0600b2cd755959527230ef5a6fba97bb762a.tar.xz | |
crypto: vmx - Adding enable_kernel_vsx() to access VSX instructions
vmx-crypto driver make use of some VSX instructions which are
only available if VSX is enabled. Running in cases where VSX
are not enabled vmx-crypto fails in a VSX exception.
In order to fix this enable_kernel_vsx() was added to turn on
VSX instructions for vmx-crypto.
Signed-off-by: Leonidas S. Barbosa <leosilva@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/vmx/aes_ctr.c')
| -rw-r--r-- | drivers/crypto/vmx/aes_ctr.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/crypto/vmx/aes_ctr.c b/drivers/crypto/vmx/aes_ctr.c index 7adae42a7b79..1e754ae4e850 100644 --- a/drivers/crypto/vmx/aes_ctr.c +++ b/drivers/crypto/vmx/aes_ctr.c @@ -82,6 +82,7 @@ static int p8_aes_ctr_setkey(struct crypto_tfm *tfm, const u8 *key, pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key); pagefault_enable(); @@ -100,6 +101,7 @@ static void p8_aes_ctr_final(struct p8_aes_ctr_ctx *ctx, pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); aes_p8_encrypt(ctrblk, keystream, &ctx->enc_key); pagefault_enable(); @@ -131,6 +133,7 @@ static int p8_aes_ctr_crypt(struct blkcipher_desc *desc, while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) { pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); aes_p8_ctr32_encrypt_blocks(walk.src.virt.addr, walk.dst.virt.addr, (nbytes & |