| 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
| ||
|
Message-ID: <20100121171209.1e8eb864@nehalam> Date: Thu, 21 Jan 2010 17:12:09 -0800 From: Stephen Hemminger <shemminger@...tta.com> To: Grant Grundler <grundler@...isc-linux.org> Cc: David Miller <davem@...emloft.net>, Jarek Poplawski <jarkao2@...il.com>, Grant Grundler <grundler@...isc-linux.org>, netdev@...r.kernel.org Subject: Re: [PATCH 06/11] de2104x: fix DMA sync_single length error On Thu, 21 Jan 2010 18:02:44 -0700 Grant Grundler <grundler@...isc-linux.org> wrote: > On Wed, Jan 20, 2010 at 12:45:05PM -0800, Stephen Hemminger wrote: > > The DMA api requires that the full mapping be sync'd when > > copying frame. First found by Jarek on sky2. > > Are you referring to the example code in Documentation/PCI/PCI-DMA-mapping.txt? > > I don't see any "Use the full mapping" statement otherwise. > > Is there a DMA HW implementation that requires the syncing full buffer? > > I think it would be interesting to point that out in the commit comments > since other NIC drivers are likely to also have this issue as well. > > I have no objection to this patch. Just want to be clear why > it's being pushed. > > Please added Acked-by: Grant Grundler <grundler@...isc-linux.org> The documentation was in DMA-API.txt and it was wrong. The DMA debug library was enforcing a bogus restriction. Dave correctly dropped the patch. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists