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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.