[PATCH 00/10] crypto: x86 - avoid absolute references

[Ard Biesheuvel <ardb@kernel.org>]

This is preparatory work for allowing the kernel to be built as a PIE
executable, which relies mostly on RIP-relative symbol references from
code, which don't need to be updated when a binary is loaded at an
address different from its link time address.

Most changes are quite straight-forward, i.e., just adding a (%rip)
suffix is enough in many cases. However, some are slightly trickier, and
need some minor reshuffling of the asm code to get rid of the absolute
references in the code.

Tested with CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y on a x86 CPU that
implements AVX, AVX2 and AVX512.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Eric Biggers <ebiggers@kernel.org>
Cc: Kees Cook <keescook@chromium.org>

Ard Biesheuvel (10):
  crypto: x86/aegis128 - Use RIP-relative addressing
  crypto: x86/aesni - Use RIP-relative addressing
  crypto: x86/aria - Use RIP-relative addressing
  crypto: x86/camellia - Use RIP-relative addressing
  crypto: x86/cast5 - Use RIP-relative addressing
  crypto: x86/cast6 - Use RIP-relative addressing
  crypto: x86/crc32c - Use RIP-relative addressing
  crypto: x86/des3 - Use RIP-relative addressing
  crypto: x86/ghash - Use RIP-relative addressing
  crypto: x86/sha256 - Use RIP-relative addressing

 arch/x86/crypto/aegis128-aesni-asm.S         |  6 +-
 arch/x86/crypto/aesni-intel_asm.S            |  2 +-
 arch/x86/crypto/aesni-intel_avx-x86_64.S     |  6 +-
 arch/x86/crypto/aria-aesni-avx-asm_64.S      | 28 +++---
 arch/x86/crypto/aria-aesni-avx2-asm_64.S     | 28 +++---
 arch/x86/crypto/aria-gfni-avx512-asm_64.S    | 24 ++---
 arch/x86/crypto/camellia-aesni-avx-asm_64.S  | 30 +++---
 arch/x86/crypto/camellia-aesni-avx2-asm_64.S | 30 +++---
 arch/x86/crypto/camellia-x86_64-asm_64.S     |  8 +-
 arch/x86/crypto/cast5-avx-x86_64-asm_64.S    | 50 +++++-----
 arch/x86/crypto/cast6-avx-x86_64-asm_64.S    | 44 +++++----
 arch/x86/crypto/crc32c-pcl-intel-asm_64.S    |  3 +-
 arch/x86/crypto/des3_ede-asm_64.S            | 96 +++++++++++++-------
 arch/x86/crypto/ghash-clmulni-intel_asm.S    |  4 +-
 arch/x86/crypto/sha256-avx2-asm.S            | 18 ++--
 15 files changed, 213 insertions(+), 164 deletions(-)

-- 
2.39.2