Em 25-11-2013 14:26, Daniel Borkmann escreveu:
On 11/25/2013 04:59 PM, James Yonan wrote:
This approach using __asm__ ("" : "=r" (var) : "0" (var)) to try to
prevent compiler optimizations of var is interesting.
I like the fact that it's finer-grained than -Os and doesn't preclude
inlining.
Agreed. This looks much better than the Makefile workaround. Do we have
a hard guarantee that in future, this will not be detected and optimized
away by the compiler?
That guarantee is something only the compiler people can give you. But
given that RELOC_HIDE will break if that ever changes, and there are
other constructs depending on the optimization-blocking behavior of
inline assembly (like the many kinds of barriers in the kernel), I am
not worried about that.
--
Cesar Eduardo Barros
ces...@cesarb.eti.br
--
To unsubscribe from this list: send the line "unsubscribe linux-crypto" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
