Date: Wed, 27 Nov 2019 10:01:25 -0800 From: Eric Biggers <ebiggers@...nel.org> To: Kees Cook <keescook@...omium.org> Cc: Herbert Xu <herbert@...dor.apana.org.au>, João Moreira <joao.moreira@...el.com>, Ard Biesheuvel <ard.biesheuvel@...aro.org>, Sami Tolvanen <samitolvanen@...gle.com>, Stephan Mueller <smueller@...onox.de>, x86@...nel.org, linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com Subject: Re: [PATCH v7] crypto: x86: Regularize glue function prototypes On Tue, Nov 26, 2019 at 10:08:02PM -0800, Kees Cook wrote: > The crypto glue performed function prototype casting via macros to make > indirect calls to assembly routines. Instead of performing casts at the > call sites (which trips Control Flow Integrity prototype checking), switch > each prototype to a common standard set of arguments which allows the > removal of the existing macros. In order to keep pointer math unchanged, > internal casting between u128 pointers and u8 pointers is added. > > Co-developed-by: João Moreira <joao.moreira@...el.com> > Signed-off-by: João Moreira <joao.moreira@...el.com> > Signed-off-by: Kees Cook <keescook@...omium.org> Reviewed-by: Eric Biggers <ebiggers@...nel.org> - Eric
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