diff options
| author | Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com> | 2015-07-13 16:51:39 (GMT) |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-07-14 06:56:48 (GMT) |
| commit | 2d6f0600b2cd755959527230ef5a6fba97bb762a (patch) | |
| tree | daecab27712eeca306e75969d9d0ef988feda758 /drivers/crypto/vmx/ghash.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/ghash.c')
| -rw-r--r-- | drivers/crypto/vmx/ghash.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/crypto/vmx/ghash.c b/drivers/crypto/vmx/ghash.c index b5e2900..2183a2e 100644 --- a/drivers/crypto/vmx/ghash.c +++ b/drivers/crypto/vmx/ghash.c @@ -119,6 +119,7 @@ static int p8_ghash_setkey(struct crypto_shash *tfm, const u8 *key, preempt_disable(); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_init_p8(ctx->htable, (const u64 *) key); pagefault_enable(); @@ -149,6 +150,7 @@ static int p8_ghash_update(struct shash_desc *desc, preempt_disable(); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer, GHASH_DIGEST_SIZE); @@ -163,6 +165,7 @@ static int p8_ghash_update(struct shash_desc *desc, preempt_disable(); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, src, len); pagefault_enable(); @@ -193,6 +196,7 @@ static int p8_ghash_final(struct shash_desc *desc, u8 *out) preempt_disable(); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer, GHASH_DIGEST_SIZE); |