linux-kernel - Re: [PATCH] disable CPU side GART accesses

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:	Wed, 29 Oct 2008 17:32:44 -0400
From:	Dave Jones <davej@...hat.com>
To:	Dave Airlie <airlied@...il.com>
Cc:	bob.montgomery@...com, Yinghai Lu <yinghai@...nel.org>,
	Ingo Molnar <mingo@...e.hu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"vojtech@...e.cz" <vojtech@...e.cz>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"chandru@...ibm.com" <chandru@...ibm.com>,
	Joerg Roedel <joerg.roedel@....com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Pavel Machek <pavel@....cz>, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH] disable CPU side GART accesses

On Thu, Oct 30, 2008 at 07:24:34AM +1000, Dave Airlie wrote:

 > This stops the CPU from using the aperture for most DRI things. I
 > can't confirm this won't regress working systems
 > though. The whole AMD GART thing scares me, esp if some of the host
 > chipsets also have an AGP GART.

The easy cop-out for those in the past has been 'dont support them'.
It's why we removed some K8 chipset PCI IDs from the via driver for eg.
iirc, if we leave them unprogrammed, they're essentially irrelevant.

	Dave

-- 
http://www.codemonkey.org.uk
--
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/