linux-kernel - Re: [PATCH] crypto: xts: use memmove to avoid overlapped memory copy

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Message-ID: <20200717064327.GA2504@gondor.apana.org.au>
Date:   Fri, 17 Jul 2020 16:43:27 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Colin King <colin.king@...onical.com>,
        "David S . Miller" <davem@...emloft.net>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] crypto: xts: use memmove to avoid overlapped memory copy

On Fri, Jul 17, 2020 at 08:59:54AM +0300, Ard Biesheuvel wrote:
>
> Or change it to b[1] = b[0] (assuming the compiler allows struct
> assignment in that way). This will always copy XTS_BLOCK_SIZE bytes,
> but we have sufficient space, and it is probably more efficient  too
> in most cases.

Sounds good to me.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt