From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Yoder Stuart-B08248 <B08248-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>
Subject: Re: RFC: vfio / iommu driver for hardware with no iommu
Date: Wed, 24 Apr 2013 12:57:18 +0200 [thread overview]
Message-ID: <20130424105718.GJ17148@8bytes.org> (raw)
In-Reply-To: <9F6FE96B71CF29479FF1CDC8046E15035BE0A3-TcFNo7jSaXPiTqIcKZ1S2K4g8xLGJsHaLnY5E4hWTkheoWH0uzbU5w@public.gmane.org>
On Tue, Apr 23, 2013 at 04:13:00PM +0000, Yoder Stuart-B08248 wrote:
> We're aware of the obvious limitations-- no protection,
> DMA'able memory must be physically contiguous and will
> have no iova->phy translation. But there are use cases
> where all OSes involved are trusted and customers can
> live with those limitations. Virtualization is used
> here not to sandbox untrusted code, but to consolidate
> multiple OSes.
One of the major points of VFIO is to provide a userspace interface for
hardware IOMMUs. So if you have a platform without an IOMMU why do you
care about VFIO at all?
Joerg
next prev parent reply other threads:[~2013-04-24 10:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-23 16:13 RFC: vfio / iommu driver for hardware with no iommu Yoder Stuart-B08248
[not found] ` <9F6FE96B71CF29479FF1CDC8046E15035BE0A3-TcFNo7jSaXPiTqIcKZ1S2K4g8xLGJsHaLnY5E4hWTkheoWH0uzbU5w@public.gmane.org>
2013-04-23 16:56 ` Alex Williamson
[not found] ` <1366736189.2918.573.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2013-04-23 18:36 ` Sethi Varun-B16395
2013-04-23 19:16 ` Yoder Stuart-B08248
[not found] ` <9F6FE96B71CF29479FF1CDC8046E15035BE2BD-TcFNo7jSaXPiTqIcKZ1S2K4g8xLGJsHaLnY5E4hWTkheoWH0uzbU5w@public.gmane.org>
2013-04-23 19:47 ` Alex Williamson
[not found] ` <1366746427.2918.650.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2013-04-24 19:41 ` Don Dutile
[not found] ` <51783553.80202-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-25 2:49 ` Sethi Varun-B16395
[not found] ` <C5ECD7A89D1DC44195F34B25E172658D4BA91B-RL0Hj/+nBVCMXPU/2EZmt64g8xLGJsHaLnY5E4hWTkheoWH0uzbU5w@public.gmane.org>
2013-04-25 22:23 ` Don Dutile
[not found] ` <5179ACE8.2030506-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-27 4:22 ` Andrew Cooks
2013-04-30 17:28 ` Konrad Rzeszutek Wilk
[not found] ` <20130430172849.GB22752-6K5HmflnPlqSPmnEAIUT9EEOCMrvLtNR@public.gmane.org>
2013-04-30 17:54 ` Alex Williamson
2013-04-30 18:13 ` Don Dutile
[not found] ` <518009D3.2050304-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-30 19:11 ` Konrad Rzeszutek Wilk
[not found] ` <20130430191131.GC24298-6K5HmflnPlqSPmnEAIUT9EEOCMrvLtNR@public.gmane.org>
2013-04-30 20:48 ` Don Dutile
[not found] ` <51802E19.9050601-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-04-30 21:15 ` Alex Williamson
[not found] ` <1367356521.22436.7.camel-85EaTFmN5p//9pzu0YdTqQ@public.gmane.org>
2013-04-30 21:51 ` Don Dutile
2013-04-30 18:25 ` Don Dutile
2013-04-24 10:57 ` Joerg Roedel [this message]
[not found] ` <20130424105718.GJ17148-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2013-04-24 11:04 ` Bhushan Bharat-R65777
[not found] ` <6A3DF150A5B70D4F9B66A25E3F7C888D06FF5799-RL0Hj/+nBVCMXPU/2EZmt64g8xLGJsHaLnY5E4hWTkheoWH0uzbU5w@public.gmane.org>
2013-04-24 15:22 ` Yoder Stuart-B08248
2013-04-24 11:52 ` Sethi Varun-B16395
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130424105718.GJ17148@8bytes.org \
--to=joro-zlv9swrftaidnm+yrofe0a@public.gmane.org \
--cc=B08248-KZfg59tc24xl57MIdRCFDg@public.gmane.org \
--cc=iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).