linux-kernel - Re: [PATCH] atl1: disable 64bit DMA

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: <46803A40.4070009@redhat.com>
Date:	Mon, 25 Jun 2007 17:57:20 -0400
From:	Chris Snook <csnook@...hat.com>
To:	"Jay L. T. Cornwall" <jay@...na.co.uk>
CC:	Luca Tettamanti <kronos.it@...il.com>,
	Jeff Garzik <jgarzik@...ox.com>,
	Jay Cliburn <jacliburn@...lsouth.net>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] atl1: disable 64bit DMA

Jay L. T. Cornwall wrote:
> Chris Snook wrote:
> 
>> What boards have we seen this on?  It's quite possible this is:
> 
> I can reproduce on an Asus P5K with a Core 2 Duo E6600.
> 
> lspci identifies the controller as:
>   02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit
>   Ethernet Adapter (rev b0)
> 
> dmesg notes the PCI-DMA mapping implementation:
>   PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
> 

I had a hunch this was on Intel.  I'd rather just disable this when swiotlb is 
in use, unless we get more complaints.  It's probably ultimately a BIOS quirk 
anyway.

	-- Chris
-
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/