diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2018-08-22 11:51:44 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-09-04 06:37:04 +0300 |
| commit | ab8085c130edd65be0d95cc95c28b51c4c6faf9d (patch) | |
| tree | 7c73b7bb77e36f184cae8609576276aeeec85d44 /arch/x86/crypto/sha256-mb/Makefile | |
| parent | 820684cc269f8295f13c890491dcbe07fdc647af (diff) | |
| download | linux-ab8085c130edd65be0d95cc95c28b51c4c6faf9d.tar.xz | |
crypto: x86 - remove SHA multibuffer routines and mcryptd
As it turns out, the AVX2 multibuffer SHA routines are currently
broken [0], in a way that would have likely been noticed if this
code were in wide use. Since the code is too complicated to be
maintained by anyone except the original authors, and since the
performance benefits for real-world use cases are debatable to
begin with, it is better to drop it entirely for the moment.
[0] https://marc.info/?l=linux-crypto-vger&m=153476243825350&w=2
Suggested-by: Eric Biggers <ebiggers@google.com>
Cc: Megha Dey <megha.dey@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto/sha256-mb/Makefile')
| -rw-r--r-- | arch/x86/crypto/sha256-mb/Makefile | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/arch/x86/crypto/sha256-mb/Makefile b/arch/x86/crypto/sha256-mb/Makefile deleted file mode 100644 index 53ad6e7db747..000000000000 --- a/arch/x86/crypto/sha256-mb/Makefile +++ /dev/null @@ -1,14 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# -# Arch-specific CryptoAPI modules. -# - -OBJECT_FILES_NON_STANDARD := y - -avx2_supported := $(call as-instr,vpgatherdd %ymm0$(comma)(%eax$(comma)%ymm1\ - $(comma)4)$(comma)%ymm2,yes,no) -ifeq ($(avx2_supported),yes) - obj-$(CONFIG_CRYPTO_SHA256_MB) += sha256-mb.o - sha256-mb-y := sha256_mb.o sha256_mb_mgr_flush_avx2.o \ - sha256_mb_mgr_init_avx2.o sha256_mb_mgr_submit_avx2.o sha256_x8_avx2.o -endif |