linux-kernel - Re: [PATCH v2] fsldma: add support to 36-bit physical address

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: <AANLkTi=1nutREorMFY2VJyUYQD0SHfiSeskw-u22P+R-@mail.gmail.com>
Date:	Sat, 13 Nov 2010 16:43:30 -0600
From:	Timur Tabi <timur.tabi@...il.com>
To:	Kumar Gala <galak@...nel.crashing.org>
Cc:	Li Yang <leoli@...escale.com>, dan.j.williams@...el.com,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] fsldma: add support to 36-bit physical address

On Thu, Nov 11, 2010 at 5:56 AM, Kumar Gala <galak@...nel.crashing.org> wrote:

> Is there any reason we shouldn't set DMA_BIT_MASK(64) since the DMA block programming model allows the address to be 64-bits?

Can you explain that?  The DMA registers only have room for 36 bits
for the physical address.

-- 
Timur Tabi
Linux kernel developer at Freescale
--
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/