linux-kernel - SB600 64-bit DMA BIOS misconfiguration (formerly RE: [PATCH 2.6.34] ehci-hcd: add option to enable 64-bit DMA support)

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]

Date:	Tue, 23 Feb 2010 19:53:05 -0800
From:	Yuhong Bao <yuhongbao_386@...mail.com>
To:	<hancockrwd@...il.com>, <greg@...ah.com>, <shane.huang@....com>
CC:	<linux-kernel@...r.kernel.org>, <linux-ide@...r.kernel.org>,
	<tj@...nel.org>
Subject: SB600 64-bit DMA BIOS misconfiguration (formerly RE: [PATCH 2.6.34]
 ehci-hcd: add option to enable 64-bit DMA support)

> it doesn't work. Based on the libata experience with AHCI which has a
> similar 64-bit feature flag, there are some controllers that didn't do
> it properly, but not many (only ATI SB600 it appears, and only on
> certain boards, as it seems it was a BIOS configuration issue).
It seems it was solved by a DMI whitelist, but if it is a BIOS configuration issue, I think it would be better if it could be detected directly instead by reading the configuration directly from the device and correcting it if possible. Is that possible?

Yuhong Bao

_________________________________________________________________
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
http://clk.atdmt.com/GBL/go/201469229/direct/01/--
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/