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crypto: aegis128/simd - build 32-bit ARM for v8 architecture explicitly

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[ Upstream commit 830536770f968ab33ece123b317e252c269098db ]

Now that the Clang compiler has taken it upon itself to police the
compiler command line, and reject combinations for arguments it views
as incompatible, the AEGIS128 no longer builds correctly, and errors
out like this:

  clang-10: warning: ignoring extension 'crypto' because the 'armv7-a'
  architecture does not support it [-Winvalid-command-line-argument]

So let's switch to armv8-a instead, which matches the crypto-neon-fp-armv8
FPU profile we specify. Since neither were actually supported by GCC
versions before 4.8, let's tighten the Kconfig dependencies as well so
we won't run into errors when building with an ancient compiler.

Signed-off-by: Ard Biesheuvel <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Tested-by: Nathan Chancellor <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Tested-by: Nick Desaulniers <[email protected]>
Reported-by: <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Ard Biesheuvel 2019-10-02 09:54:48 +02:00 • committed by Greg Kroah-Hartman
commit 9004977004
1 changed files with 1 additions and 0 deletions
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crypto/Kconfig
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@ -309,6 +309,7 @@ config CRYPTO_AEGIS128
config CRYPTO_AEGIS128_SIMD
bool "Support SIMD acceleration for AEGIS-128"
depends on CRYPTO_AEGIS128 && ((ARM || ARM64) && KERNEL_MODE_NEON)
depends on !ARM || CC_IS_CLANG || GCC_VERSION >= 40800
default y
config CRYPTO_AEGIS128_AESNI_SSE2