| 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
| ||
|
Date: Fri, 21 Oct 2011 20:34:19 +0000
From: "Woodhouse, David" <david.woodhouse@...el.com>
To: Alex Williamson <alex.williamson@...hat.com>
CC: "joerg.roedel@....com" <joerg.roedel@....com>,
"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"chrisw@...hat.com" <chrisw@...hat.com>,
"agraf@...e.de" <agraf@...e.de>,
"dwg@....ibm.com" <dwg@....ibm.com>,
"scottwood@...escale.com" <scottwood@...escale.com>,
"B08248@...escale.com" <B08248@...escale.com>,
"benh@...nel.crashing.org" <benh@...nel.crashing.org>
Subject: Re: [PATCH 0/4] iommu: iommu_ops group interface
On Fri, 2011-10-21 at 13:55 -0600, Alex Williamson wrote:
> IOMMUs can't always distiguish transactions from each individual
> device in a system. Sometimes this is by design (such as powerpc
> partitionable endpoints), other times by topology (PCIe-to-PCI
> bridges masking downstream devices). We call these sets of
> indistinguishable devices "groups".
Other times it's because a multi-function PCIe device is broken and does
all its DMA from function zero.... like some Ricoh devices seen in
laptops. Can you handle quirks to "group" those too?
--
Sent with MeeGo's ActiveSync support.
David Woodhouse Open Source Technology Centre
David.Woodhouse@...el.com Intel Corporation
Download attachment "smime.p7s" of type "application/x-pkcs7-signature" (4370 bytes)
Powered by blists - more mailing lists