linux-kernel - Re: GFP_ATOMIC page allocation failures.

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: <1207167128.5311.5.camel@dell>
Date:	Wed, 02 Apr 2008 12:12:06 -0800
From:	"Michael Chan" <mchan@...adcom.com>
To:	"David Miller" <davem@...emloft.net>, mcarlson@...adcom.com
cc:	kosaki.motohiro@...fujitsu.com, akpm@...ux-foundation.org,
	csnook@...hat.com, davej@...emonkey.org.uk,
	nickpiggin@...oo.com.au, linux-kernel@...r.kernel.org,
	netdev <netdev@...r.kernel.org>
Subject: Re: GFP_ATOMIC page allocation failures.

On Wed, 2008-04-02 at 11:44 -0700, David Miller wrote:
> From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Date: Wed, 02 Apr 2008 19:56:05 +0900
>
> > BTW:
> > other person's tg3 allocation failure bug report.
> > 
> > http://bugzilla.kernel.org/show_bug.cgi?id=9771
> 
> Yes, I know about it.  It will occur for any device
> which must use linear RX buffers and supports
> >PAGE_SIZE MTUs.
> 
> But modern chips are going to support segmentation of
> receive packets into multiple individual pages and
> therefore not have this order>0 page allocation
> requirement.

tg3 hardware has a jumbo rx ring that can accommodate non-linear SKBs.
Matt is working on some patches to add this feature.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/