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Thu, 15 Oct 2026 19:26:38 -0700 (PDT) Date: Fri, 16 Oct 2026 07:56:31 +0530 From: Mohamad Raizudeen To: Eric Biggers Cc: herbert@gondor.apana.org.au, ardb@kernel.org, Jason@zx2c4.com, skhan@linuxfoundation.org, me@brighamcampbell.com, jkoolstra@xs4all.nl, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] lib/crypto: md5: remove unused header Message-ID: References: <20261015060806.5377-1-raizudeen.kerneldev@gmail.com> <20261015175655.GA2170687@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261015175655.GA2170687@google.com> On Thu, Oct 15, 2026 at 05:56:55PM +0000, Eric Biggers wrote: > On Thu, Oct 15, 2026 at 11:38:06AM +0530, Mohamad Raizudeen wrote: > > The code handles memory accesses using direct pointer casts and > > functions like 'cpu_to_le64()' instead of the unaligned helpers. > > This should say "using memcpy() instead of the unaligned helpers". The > actual unaligned accesses in lib/crypto/md5.c are the following: > > memcpy(in, data, MD5_BLOCK_SIZE); > le32_to_cpu_array(in, ARRAY_SIZE(in)); > > and: > > cpu_to_le32_array(ctx->state.h, ARRAY_SIZE(ctx->state.h)); > memcpy(out, ctx->state.h, MD5_DIGEST_SIZE); > > - Eric You are right, the main data block accesses use memcpy(). The reason I mentioned "direct pointer access" because of the `*(__le64 *)` cast used for the bitcount padding in __md5_final() and hmac_md5_final(). But I agree that mentioning memcpy() is more accurate for the whole file. I will update the commit message and send a v3 soon. Thanks, Mohamad Raizudeen