linux-kernel - Re: [PATCH v2 2/2] r8169: Avoid pointer aliasing

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20190204165902.GB24989@lunn.ch>
Date:   Mon, 4 Feb 2019 17:59:02 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Realtek linux nic maintainers <nic_swsd@...ltek.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] r8169: Avoid pointer aliasing

On Mon, Feb 04, 2019 at 05:42:13PM +0100, Thierry Reding wrote:
> From: Thierry Reding <treding@...dia.com>
> 
> Read MAC address 32-bit at a time and manually extract the individual
> bytes. This avoids pointer aliasing and gives the compiler a better
> chance of optimizing the operation.
> 
> Suggested-by: Andrew Lunn <andrew@...n.ch>
> Signed-off-by: Thierry Reding <treding@...dia.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew