linux-kernel - Re: Question about iommu on x86

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, 25 May 2011 11:00:33 +0100
From:	Daniel Haid <d.haid@...i.tv>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: Question about iommu on x86_64 and radeon driver.

> I added it originally. The VIA chipset seems to hang on most
> DMAs through the IOMMU, so it was disabled.

 I see. Now, maybe this will not work for some reason, but
 would it be possible to somehow disable both IOMMU and SWIOTLB
 and tell all drivers only to do DMA with the lower 4GB of memory?

 Unfortunately simply turning "iommu=off" does not work for me
 as the sata and pata drivers stop working.
--
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/