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Date: Tue, 4 Sep 2018 13:19:52 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc: linux-crypto@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
ebiggers@...gle.com, Megha Dey <megha.dey@...ux.intel.com>,
Tim Chen <tim.c.chen@...ux.intel.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Martin Schwidefsky <schwidefsky@...ibm.com>,
Heiko Carstens <heiko.carstens@...ibm.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH] crypto: x86 - remove SHA multibuffer routines and mcryptd
On Wed, Aug 22, 2018 at 10:51:44AM +0200, Ard Biesheuvel wrote:
> 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@...gle.com>
> Cc: Megha Dey <megha.dey@...ux.intel.com>
> Cc: Tim Chen <tim.c.chen@...ux.intel.com>
> Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
> Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
> Cc: Heiko Carstens <heiko.carstens@...ibm.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
> ---
> MAINTAINERS | 8 -
> arch/m68k/configs/amiga_defconfig | 1 -
> arch/m68k/configs/apollo_defconfig | 1 -
> arch/m68k/configs/atari_defconfig | 1 -
> arch/m68k/configs/bvme6000_defconfig | 1 -
> arch/m68k/configs/hp300_defconfig | 1 -
> arch/m68k/configs/mac_defconfig | 1 -
> arch/m68k/configs/multi_defconfig | 1 -
> arch/m68k/configs/mvme147_defconfig | 1 -
> arch/m68k/configs/mvme16x_defconfig | 1 -
> arch/m68k/configs/q40_defconfig | 1 -
> arch/m68k/configs/sun3_defconfig | 1 -
> arch/m68k/configs/sun3x_defconfig | 1 -
> arch/s390/configs/debug_defconfig | 1 -
> arch/s390/configs/performance_defconfig | 1 -
> arch/x86/crypto/Makefile | 3 -
> arch/x86/crypto/sha1-mb/Makefile | 14 -
> arch/x86/crypto/sha1-mb/sha1_mb.c | 1011 ----------------
> arch/x86/crypto/sha1-mb/sha1_mb_ctx.h | 134 ---
> arch/x86/crypto/sha1-mb/sha1_mb_mgr.h | 110 --
> .../crypto/sha1-mb/sha1_mb_mgr_datastruct.S | 287 -----
> .../crypto/sha1-mb/sha1_mb_mgr_flush_avx2.S | 304 -----
> .../crypto/sha1-mb/sha1_mb_mgr_init_avx2.c | 64 -
> .../crypto/sha1-mb/sha1_mb_mgr_submit_avx2.S | 209 ----
> arch/x86/crypto/sha1-mb/sha1_x8_avx2.S | 492 --------
> arch/x86/crypto/sha256-mb/Makefile | 14 -
> arch/x86/crypto/sha256-mb/sha256_mb.c | 1013 ----------------
> arch/x86/crypto/sha256-mb/sha256_mb_ctx.h | 134 ---
> arch/x86/crypto/sha256-mb/sha256_mb_mgr.h | 108 --
> .../sha256-mb/sha256_mb_mgr_datastruct.S | 304 -----
> .../sha256-mb/sha256_mb_mgr_flush_avx2.S | 307 -----
> .../sha256-mb/sha256_mb_mgr_init_avx2.c | 65 -
> .../sha256-mb/sha256_mb_mgr_submit_avx2.S | 214 ----
> arch/x86/crypto/sha256-mb/sha256_x8_avx2.S | 598 ----------
> arch/x86/crypto/sha512-mb/Makefile | 12 -
> arch/x86/crypto/sha512-mb/sha512_mb.c | 1047 -----------------
> arch/x86/crypto/sha512-mb/sha512_mb_ctx.h | 128 --
> arch/x86/crypto/sha512-mb/sha512_mb_mgr.h | 104 --
> .../sha512-mb/sha512_mb_mgr_datastruct.S | 281 -----
> .../sha512-mb/sha512_mb_mgr_flush_avx2.S | 297 -----
> .../sha512-mb/sha512_mb_mgr_init_avx2.c | 69 --
> .../sha512-mb/sha512_mb_mgr_submit_avx2.S | 224 ----
> arch/x86/crypto/sha512-mb/sha512_x4_avx2.S | 531 ---------
> crypto/Kconfig | 62 -
> crypto/Makefile | 1 -
> crypto/mcryptd.c | 675 -----------
> include/crypto/mcryptd.h | 114 --
> 47 files changed, 8952 deletions(-)
> delete mode 100644 arch/x86/crypto/sha1-mb/Makefile
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_mb.c
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_mb_ctx.h
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_mb_mgr.h
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_mb_mgr_datastruct.S
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_mb_mgr_flush_avx2.S
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_mb_mgr_init_avx2.c
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_mb_mgr_submit_avx2.S
> delete mode 100644 arch/x86/crypto/sha1-mb/sha1_x8_avx2.S
> delete mode 100644 arch/x86/crypto/sha256-mb/Makefile
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_mb.c
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_ctx.h
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_mgr.h
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_mgr_datastruct.S
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_mgr_init_avx2.c
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_mgr_submit_avx2.S
> delete mode 100644 arch/x86/crypto/sha256-mb/sha256_x8_avx2.S
> delete mode 100644 arch/x86/crypto/sha512-mb/Makefile
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_mb.c
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_mb_ctx.h
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_mb_mgr.h
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_mb_mgr_datastruct.S
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_mb_mgr_flush_avx2.S
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_mb_mgr_init_avx2.c
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_mb_mgr_submit_avx2.S
> delete mode 100644 arch/x86/crypto/sha512-mb/sha512_x4_avx2.S
> delete mode 100644 crypto/mcryptd.c
> delete mode 100644 include/crypto/mcryptd.h
Patch applied. Thanks.
--
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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