crypto: aesni - Move HashKey computation from stack to gcm_context

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HashKey computation only needs to happen once per scatter/gather operation,
save it between calls in gcm_context struct instead of on the stack.
Since the asm no longer stores anything on the stack, we can use
%rsp directly, and clean up the frame save/restore macros a bit.

Hashkeys actually only need to be calculated once per key and could
be moved to when set_key is called, however, the current glue code
falls back to generic aes code if fpu is disabled.

Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Dave Watson 2018-02-14 09:40:10 -08:00 • committed by Herbert Xu

parent e2e34b0856

commit 1476db2d12

1 changed files with 106 additions and 99 deletions

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arch/x86/crypto/aesni-intel_asm.S

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