Re: [PATCH] crypto: add alignment handling to digest layer

From: Atsushi Nemoto
Date: Fri Apr 07 2006 - 01:28:19 EST


On Fri, 7 Apr 2006 09:24:54 +1000, Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote:
> Another thing, could you pleas change the stack allocation in final so
> that it does it like cbc_process_decrypt? The reason is that gcc is too
> stupid to not allocate that buffer unconditionally.

I can do it, but it will add another overhead. (we must call
crypto_tfm_alg_digestsize() unconditionally)

It seems modern gcc (at least gcc 3.4 on i386 and mips) can allocate
the buffer conditionally. It is better to optimize for newer gcc,
isn't it?

---
Atsushi Nemoto
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