On Mon, Jul 16, 2018 at 6:05 AM, Kees Cook <keescook@xxxxxxxxxxxx> wrote: > In the quest to remove all stack VLA usage from the kernel[1], this > removes the discouraged use of AHASH_REQUEST_ON_STACK (and associated > VLA) by switching to shash directly and keeping the associated descriptor > allocated with the regular state on the heap. > > [1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@xxxxxxxxxxxxxx > > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> I had concerns at first that this approach might make it slower, but upon reading through implementation of the shash_ahash_ implementation, I concluded that it can only be better than before, improving both performance and stack usage. Acked-by: Arnd Bergmann <arnd@xxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
