diff options
| author | Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com> | 2015-07-13 13:51:39 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-29 19:26:05 +0200 |
| commit | 98747a5651a63b7e9246880909013753c7b633eb (patch) | |
| tree | 1b9fc0362e55da3f6f2e930ecfe5a8717f03ca8e /drivers/crypto/vmx/ghash.c | |
| parent | b40924367be91f86c882a6a023a50fbfd7f9c430 (diff) | |
crypto: vmx - Adding enable_kernel_vsx() to access VSX instructions
commit 2d6f0600b2cd755959527230ef5a6fba97bb762a upstream.
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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 d0ffe277af5c..917b3f09e724 100644 --- a/drivers/crypto/vmx/ghash.c +++ b/drivers/crypto/vmx/ghash.c @@ -116,6 +116,7 @@ static int p8_ghash_setkey(struct crypto_shash *tfm, const u8 *key, pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_init_p8(ctx->htable, (const u64 *) key); pagefault_enable(); @@ -142,6 +143,7 @@ static int p8_ghash_update(struct shash_desc *desc, GHASH_DIGEST_SIZE - dctx->bytes); pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer, GHASH_DIGEST_SIZE); @@ -154,6 +156,7 @@ static int p8_ghash_update(struct shash_desc *desc, if (len) { pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, src, len); pagefault_enable(); @@ -182,6 +185,7 @@ static int p8_ghash_final(struct shash_desc *desc, u8 *out) dctx->buffer[i] = 0; pagefault_disable(); enable_kernel_altivec(); + enable_kernel_vsx(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer, GHASH_DIGEST_SIZE); |