Messages in this thread | | | From | Arnd Bergmann <> | Date | Mon, 16 Jul 2018 13:01:34 +0200 | Subject | Re: [PATCH] ppp: mppe: Remove VLA usage |
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On Mon, Jul 16, 2018 at 6:05 AM, Kees Cook <keescook@chromium.org> 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@mail.gmail.com > > Signed-off-by: Kees Cook <keescook@chromium.org>
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@arndb.de>
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