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 <redacted>
Cc: Megha Dey <redacted>
Cc: Tim Chen <redacted>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Martin Schwidefsky <redacted>
Cc: Heiko Carstens <redacted>
Cc: Thomas Gleixner <redacted>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Ard Biesheuvel <redacted>
---
 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 [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt