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crypto: x86/aes-ni - switch to generic for fallback and key routines

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The AES-NI code contains fallbacks for invocations that occur from a
context where the SIMD unit is unavailable, which really only occurs
when running in softirq context that was entered from a hard IRQ that
was taken while running kernel code that was already using the FPU.

That means performance is not really a consideration, and we can just
use the new library code for this use case, which has a smaller
footprint and is believed to be time invariant. This will allow us to
drop the non-SIMD asm routines in a subsequent patch.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel
2019-07-02 21:41:23 +02:00
committed by Herbert Xu
parent e59c1c9874
commit 2c53fd11f7
3 changed files with 8 additions and 22 deletions
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12
arch/x86/include/asm/crypto/aes.h
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@@ -1,12 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef ASM_X86_AES_H
#define ASM_X86_AES_H
#include <linux/crypto.h>
#include <crypto/aes.h>
void crypto_aes_encrypt_x86(struct crypto_aes_ctx *ctx, u8 *dst,
const u8 *src);
void crypto_aes_decrypt_x86(struct crypto_aes_ctx *ctx, u8 *dst,
const u8 *src);
#endif