linux-kernel - Re: [PATCH] quiet down swiotlb warnings

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: <46607F96.7060200@redhat.com>
Date:	Fri, 01 Jun 2007 16:20:38 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Andrew Vasquez <andrew.vasquez@...gic.com>,
	Christoph Hellwig <hch@...radead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] quiet down swiotlb warnings

Andi Kleen wrote:
> On Fri, Jun 01, 2007 at 01:00:49PM -0700, Andrew Vasquez wrote:
>> yes, the card can support 64bit DMA transfers. but in this case the
>> 'required' DMA mask returned from dma_get_required_mask() states that a
>> 32bit mask would suffice.
> 
> That's a bug in the kernel then that needs to be fixed. Find out
> why it does that and change it. Don't fix the symptoms, fix the root cause.

The system in question only has 2GB of memory.

Why would it need to do 64 bit DMA?

-- 
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is.  Each group
calls the other unpatriotic.
-
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/