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Re: [linux-dvb] [PATCH] Userspace tuner
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From:
Markus Rechberger <mrechberger@...>
To: Manu Abraham <abraham.manu@...>
Cc: Joerg Roedel <joro@...>, linux-dvb@linuxtv.org <linux-dvb@...>, video4linux-list@redhat.com <video4linux-list@...>, akpm@linux-foundation.org <akpm@...>, linux-kernel@vger.kernel.org <linux-kernel@...>
Subject:
Re: [linux-dvb] [PATCH] Userspace tuner
Date: Friday, September 14, 2007 - 12:09 pm
On 9/14/07, Manu Abraham <abraham.manu@gmail.com> wrote:
quoted text
> Joerg Roedel wrote: > > On Fri, Sep 14, 2007 at 11:57:59AM +0400, Manu Abraham wrote: > >>>>> What do you think about IOMMU? > >>>>> > >>>>> > >>>> Just because AMD or INTEL want to invent some whizzy new technology it > >>>> doesn't say anything about the TV card development and retail business. > >>>> Intel and AMD have teams of Linux engineers helping operating system > >>>> developers bring their ideas and technologies to new platforms. That's > a > >>>> million miles away from any of the TV board vendors I know of, who have > >>>> little or NO fulltime linux developers and consider the < 5% market > >>>> fringe at best. > >>>> > >>> it helps to virtualize devices and introduces newer features for that. > >>> Some interesting projects could be derrived out of that, there are > >>> quite a few interesting papers floating around how drivers could be > >>> handled in future. > >>> > >> IOMMU can be considered similar to the AGP GART, which is similar, > >> remapping the Addresses, as far as i understand. > > > > Common new IOMMUs have only very few in common with the AGP GART. In > > fact, with current modern IOMMU hardware it will be possible to > > implement secure userspace device drivers that are even able to do DMA. > > This is not possible with the GART. > > > >> Though you get a physical to virtual translation, what about interrupts, > > > > Modern IOMMUs are able to remap interrupts. This will solve the problem > > with PCI interrupt sharing. > > What CPU's are we talking about ? >
upcoming x86-64 processors from the AMD side. I'm not into what Intel is doing in that area at the moment. Markus -
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Messages in current thread:
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Wed Sep 12, 7:10 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Johannes Stezenbach
, (Thu Sep 13, 9:13 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Thu Sep 13, 10:12 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Thu Sep 13, 11:50 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Thu Sep 13, 12:08 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Steven Toth
, (Thu Sep 13, 4:36 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Alan Cox
, (Fri Sep 14, 8:10 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, hermann pitton
, (Thu Sep 13, 8:49 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Thu Sep 13, 7:17 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Alan Cox
, (Fri Sep 14, 9:52 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 12:18 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Jelle Foks
, (Tue Sep 18, 4:19 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Tue Sep 18, 6:56 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Alan Cox
, (Tue Sep 18, 7:00 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Tue Sep 18, 4:55 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Steven Toth
, (Thu Sep 13, 9:03 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 2:38 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Johannes Stezenbach
, (Fri Sep 14, 7:38 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 12:36 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Johannes Stezenbach
, (Fri Sep 14, 4:43 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 9:49 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Johannes Stezenbach
, (Sat Sep 15, 9:34 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Steven Toth
, (Sat Sep 15, 10:56 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Sat Sep 15, 4:52 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Fri Sep 14, 11:09 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Sat Sep 15, 8:59 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 9:29 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Johannes Stezenbach
, (Sat Sep 15, 9:16 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Sat Sep 15, 9:38 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Sat Sep 15, 10:04 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Bernard Jungen
, (Sat Sep 15, 12:58 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Mon Sep 17, 4:46 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Hans Verkuil
, (Sun Sep 16, 7:30 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Sat Sep 15, 10:33 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Sat Sep 15, 10:45 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Fri Sep 14, 9:49 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Fri Sep 14, 1:32 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 1:46 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Fri Sep 14, 2:29 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Michael Krufky
, (Fri Sep 14, 3:20 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Aidan Thornton
, (Fri Sep 14, 5:07 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Fri Sep 14, 5:53 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Mauro Carvalho Chehab
, (Fri Sep 14, 5:16 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Fri Sep 14, 3:57 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Joerg Roedel
, (Fri Sep 14, 5:15 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Fri Sep 14, 8:00 am)
Re: [linux-dvb] [PATCH] Userspace tuner
, Joerg Roedel
, (Fri Sep 14, 12:13 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Fri Sep 14, 12:56 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Joerg Roedel
, (Fri Sep 14, 1:40 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 12:09 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Alex Deucher
, (Fri Sep 14, 2:52 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Fri Sep 14, 2:59 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Alex Deucher
, (Fri Sep 14, 3:38 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Thu Sep 13, 12:22 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Markus Rechberger
, (Thu Sep 13, 12:32 pm)
Re: [linux-dvb] [PATCH] Userspace tuner
, Manu Abraham
, (Thu Sep 13, 12:52 pm)
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