netdev - Re: RE: [PATCH linux-next] atm: lanai: Use dma_zalloc

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] [day] [month] [year] [list]

Date:   Tue, 17 Jan 2023 19:42:00 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     David Laight <David.Laight@...LAB.COM>,
        "'ye.xingchen@....com.cn'" <ye.xingchen@....com.cn>,
        "3chas3@...il.com" <3chas3@...il.com>
Cc:     "linux-atm-general@...ts.sourceforge.net" 
        <linux-atm-general@...ts.sourceforge.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: RE: [PATCH linux-next] atm: lanai: Use dma_zalloc_coherent()

Le 17/01/2023 à 16:37, David Laight a écrit :
> From: ye.xingchen@....com.cn
>> Sent: 17 January 2023 09:21
>>
>> Instead of using dma_alloc_coherent() and memset() directly use
>> dma_zalloc_coherent().
> 
> I'm sure I've a brain cell that remembers that dma_alloc_coherent()
> always zeros the buffer.
> So the 'zalloc' variant isn't needed and the memset() can just
> be deleted.
> OTOH is it really worth the churn.

More-over, dma_zalloc_coherent() has been removed at the very beginning 
of 2019 in commit dfd32cad146e.

It is not existing since v5.0-rc2.

\o/


CJ

> 
> 	David
> 
> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
> Registration No: 1397386 (Wales)