diff options
| author | Anton Blanchard <anton@samba.org> | 2015-10-29 11:44:05 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-12-01 13:52:25 +1100 |
| commit | dc4fbba11e4661a6a77a1f89ba32f9082e6395ff (patch) | |
| tree | 567037dc8e93063615e558eda1c80f8a82154749 /drivers/crypto/vmx/aes_cbc.c | |
| parent | a0e72cf12b1a1f159b6822ed2e1e41893d996fc7 (diff) | |
powerpc: Create disable_kernel_{fp,altivec,vsx,spe}()
The enable_kernel_*() functions leave the relevant MSR bits enabled
until we exit the kernel sometime later. Create disable versions
that wrap the kernel use of FP, Altivec VSX or SPE.
While we don't want to disable it normally for performance reasons
(MSR writes are slow), it will be used for a debug boot option that
does this and catches bad uses in other areas of the kernel.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/crypto/vmx/aes_cbc.c')
| -rw-r--r-- | drivers/crypto/vmx/aes_cbc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c index 8847b92e9ff0..1881b3f413fa 100644 --- a/drivers/crypto/vmx/aes_cbc.c +++ b/drivers/crypto/vmx/aes_cbc.c @@ -87,6 +87,7 @@ static int p8_aes_cbc_setkey(struct crypto_tfm *tfm, const u8 *key, 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); + disable_kernel_vsx(); pagefault_enable(); preempt_enable(); @@ -127,6 +128,7 @@ static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc, ret = blkcipher_walk_done(desc, &walk, nbytes); } + disable_kernel_vsx(); pagefault_enable(); preempt_enable(); } @@ -167,6 +169,7 @@ static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc, ret = blkcipher_walk_done(desc, &walk, nbytes); } + disable_kernel_vsx(); pagefault_enable(); preempt_enable(); } |