diff options
Diffstat (limited to 'drivers/crypto/vmx/ghash.c')
| -rw-r--r-- | drivers/crypto/vmx/ghash.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/crypto/vmx/ghash.c b/drivers/crypto/vmx/ghash.c index d0ffe277af5c..f255ec4a04d4 100644 --- a/drivers/crypto/vmx/ghash.c +++ b/drivers/crypto/vmx/ghash.c @@ -114,11 +114,13 @@ static int p8_ghash_setkey(struct crypto_shash *tfm, const u8 *key, if (keylen != GHASH_KEY_LEN) return -EINVAL; + preempt_disable(); pagefault_disable(); enable_kernel_altivec(); enable_kernel_fp(); gcm_init_p8(ctx->htable, (const u64 *) key); pagefault_enable(); + preempt_enable(); return crypto_shash_setkey(ctx->fallback, key, keylen); } @@ -140,23 +142,27 @@ static int p8_ghash_update(struct shash_desc *desc, } memcpy(dctx->buffer + dctx->bytes, src, GHASH_DIGEST_SIZE - dctx->bytes); + preempt_disable(); pagefault_disable(); enable_kernel_altivec(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer, GHASH_DIGEST_SIZE); pagefault_enable(); + preempt_enable(); src += GHASH_DIGEST_SIZE - dctx->bytes; srclen -= GHASH_DIGEST_SIZE - dctx->bytes; dctx->bytes = 0; } len = srclen & ~(GHASH_DIGEST_SIZE - 1); if (len) { + preempt_disable(); pagefault_disable(); enable_kernel_altivec(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, src, len); pagefault_enable(); + preempt_enable(); src += len; srclen -= len; } @@ -180,12 +186,14 @@ static int p8_ghash_final(struct shash_desc *desc, u8 *out) if (dctx->bytes) { for (i = dctx->bytes; i < GHASH_DIGEST_SIZE; i++) dctx->buffer[i] = 0; + preempt_disable(); pagefault_disable(); enable_kernel_altivec(); enable_kernel_fp(); gcm_ghash_p8(dctx->shash, ctx->htable, dctx->buffer, GHASH_DIGEST_SIZE); pagefault_enable(); + preempt_enable(); dctx->bytes = 0; } memcpy(out, dctx->shash, GHASH_DIGEST_SIZE); |
