From: Jesse Barnes <jesse.barnes@intel.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>,
Muli Ben-Yehuda <muli@il.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com>,
linux-kernel@vger.kernel.org, gregkh@suse.de,
suresh.b.siddha@intel.com, ashok.raj@intel.com,
davem@davemloft.net, clameter@sgi.com
Subject: Re: [Intel IOMMU 00/10] Intel IOMMU support, take #2
Date: Tue, 26 Jun 2007 13:10:15 -0700 [thread overview]
Message-ID: <200706261310.16221.jesse.barnes@intel.com> (raw)
In-Reply-To: <20070626173157.GD5244@one.firstfloor.org>
On Tuesday, June 26, 2007 10:31:57 Andi Kleen wrote:
> > >>(and I think it mostly already doesn't even without that)
> > >
> > >It uses /sys/bus/pci/* which is not any better as seen from the
> > > IOMMU.
> > >
> > >Any interface will need to be explicit because user space needs to
> > > know which
> > >DMA addresses to put into the hardware. It's not enough to just
> > >transparently
> > >translate the mappings.
> >
> > that's what DRM is used for nowadays...
>
> But DRM does support much less hardware than the X server?
Yeah, the number of DRM drivers is relatively small compared to X or
fbdev, but for simple DMA they're fairly easy to write.
> Perhaps we just need an ioctl where an X server can switch this.
Switch what? Turn on or off transparent translation?
Jesse
next prev parent reply other threads:[~2007-06-26 20:11 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-19 21:37 [Intel IOMMU 00/10] Intel IOMMU support, take #2 Keshavamurthy, Anil S
2007-06-19 21:37 ` [Intel IOMMU 01/10] DMAR detection and parsing logic Keshavamurthy, Anil S
2007-07-04 9:18 ` Peter Zijlstra
2007-07-04 10:04 ` Andrew Morton
2007-07-04 10:14 ` Peter Zijlstra
2007-06-19 21:37 ` [Intel IOMMU 02/10] PCI generic helper function Keshavamurthy, Anil S
2007-06-26 5:49 ` Andrew Morton
2007-06-26 14:44 ` Keshavamurthy, Anil S
2007-06-19 21:37 ` [Intel IOMMU 03/10] clflush_cache_range now takes size param Keshavamurthy, Anil S
2007-06-19 21:37 ` [Intel IOMMU 04/10] IOVA allocation and management routines Keshavamurthy, Anil S
2007-06-26 6:07 ` Andrew Morton
2007-06-26 16:16 ` Keshavamurthy, Anil S
2007-06-19 21:37 ` [Intel IOMMU 05/10] Intel IOMMU driver Keshavamurthy, Anil S
2007-06-19 23:32 ` Christoph Lameter
2007-06-19 23:50 ` Keshavamurthy, Anil S
2007-06-19 23:56 ` Christoph Lameter
2007-06-26 6:32 ` Andrew Morton
2007-06-26 16:29 ` Keshavamurthy, Anil S
2007-06-26 6:25 ` Andrew Morton
2007-06-26 16:33 ` Keshavamurthy, Anil S
2007-06-26 6:30 ` Andrew Morton
2007-06-19 21:37 ` [Intel IOMMU 06/10] Avoid memory allocation failures in dma map api calls Keshavamurthy, Anil S
2007-06-19 23:25 ` Christoph Lameter
2007-06-19 23:27 ` Arjan van de Ven
2007-06-19 23:34 ` Christoph Lameter
2007-06-20 0:02 ` Arjan van de Ven
2007-06-20 8:06 ` Peter Zijlstra
2007-06-20 13:03 ` Arjan van de Ven
2007-06-20 17:30 ` Siddha, Suresh B
2007-06-20 18:05 ` Peter Zijlstra
2007-06-20 19:14 ` Arjan van de Ven
2007-06-20 20:08 ` Peter Zijlstra
2007-06-20 23:03 ` Keshavamurthy, Anil S
2007-06-21 6:10 ` Peter Zijlstra
2007-06-21 6:11 ` Arjan van de Ven
2007-06-21 6:29 ` Peter Zijlstra
2007-06-21 6:37 ` Keshavamurthy, Anil S
2007-06-21 7:13 ` Peter Zijlstra
2007-06-21 19:51 ` Keshavamurthy, Anil S
2007-06-21 6:30 ` Keshavamurthy, Anil S
2007-06-26 5:34 ` Andrew Morton
2007-06-19 21:37 ` [Intel IOMMU 07/10] Intel iommu cmdline option - forcedac Keshavamurthy, Anil S
2007-06-19 21:37 ` [Intel IOMMU 08/10] DMAR fault handling support Keshavamurthy, Anil S
2007-06-19 21:37 ` [Intel IOMMU 09/10] Iommu Gfx workaround Keshavamurthy, Anil S
2007-06-19 21:37 ` [Intel IOMMU 10/10] Iommu floppy workaround Keshavamurthy, Anil S
2007-06-26 6:42 ` Andrew Morton
2007-06-26 10:37 ` Andi Kleen
2007-06-26 19:25 ` Keshavamurthy, Anil S
2007-06-26 16:26 ` Keshavamurthy, Anil S
2007-06-26 6:45 ` [Intel IOMMU 00/10] Intel IOMMU support, take #2 Andrew Morton
2007-06-26 7:12 ` Andi Kleen
2007-06-26 11:13 ` Muli Ben-Yehuda
2007-06-26 15:03 ` Arjan van de Ven
2007-06-26 15:11 ` Muli Ben-Yehuda
2007-06-26 15:48 ` Keshavamurthy, Anil S
2007-06-26 16:00 ` Muli Ben-Yehuda
2007-06-26 15:56 ` Andi Kleen
2007-06-26 15:09 ` Muli Ben-Yehuda
2007-06-26 15:36 ` Andi Kleen
2007-06-26 15:15 ` Arjan van de Ven
2007-06-26 15:33 ` Andi Kleen
2007-06-26 16:25 ` Arjan van de Ven
2007-06-26 17:31 ` Andi Kleen
2007-06-26 20:10 ` Jesse Barnes [this message]
2007-06-26 22:35 ` Andi Kleen
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