diff options
| author | Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com> | 2015-07-13 13:51:39 -0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-07-14 14:56:48 +0800 |
| commit | 2d6f0600b2cd755959527230ef5a6fba97bb762a (patch) | |
| tree | daecab27712eeca306e75969d9d0ef988feda758 /drivers/crypto/vmx/aes.c | |
| parent | 72cd7b44bc99376b3f3c93cedcd052663fcdf705 (diff) | |
| download | linux-2d6f0600b2cd755959527230ef5a6fba97bb762a.tar.gz | |
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.c')
| -rw-r--r-- | drivers/crypto/vmx/aes.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/crypto/vmx/aes.c b/drivers/crypto/vmx/aes.c index e79e567e43aa..263af709e536 100644 --- a/drivers/crypto/vmx/aes.c +++ b/drivers/crypto/vmx/aes.c @@ -84,6 +84,7 @@ static int p8_aes_setkey(struct crypto_tfm *tfm, const u8 *key, preempt_disable(); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key); ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key); pagefault_enable(); @@ -103,6 +104,7 @@ static void p8_aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) preempt_disable(); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); aes_p8_encrypt(src, dst, &ctx->enc_key); pagefault_enable(); preempt_enable(); @@ -119,6 +121,7 @@ static void p8_aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) preempt_disable(); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); aes_p8_decrypt(src, dst, &ctx->dec_key); pagefault_enable(); preempt_enable(); |