WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Re: Xen VGA graphics passthrough for secondary adapters,

To: Christian Tramnitz <chris.ace@xxxxxxx>
Subject: Re: [Xen-devel] Re: Xen VGA graphics passthrough for secondary adapters, vBAR=pBAR etc
From: Weidong Han <weidong.han@xxxxxxxxx>
Date: Mon, 12 Apr 2010 18:08:17 +0800
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Mon, 12 Apr 2010 03:09:34 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <hpuq4h$mg4$1@xxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <20100412072119.GW1878@xxxxxxxxxxx> <hpuq4h$mg4$1@xxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Thunderbird 2.0.0.21 (Windows/20090302)
Christian Tramnitz wrote:
12.04.2010 09:21, Pasi Kärkkäinen wrote:
Hello,

Now that Xen 4.0.0 is out and has support for primary graphics passthru
and many people have been using it already and asking for a status update
for secondary adapter passthru I thought of opening a new thread about this.

What are the actual issues that need to be resolved to get the
secondary graphics passthru working? Probably related to VGA BIOS execution
in the guest?

How about the vBAR=pBAR stuff required for some (Nvidia) cards?
How do we get that functionality integrated so people don't need additional 
patches?

Was there also a problem that a working VGA BIOS cannot be copied from some 
cards
and they need to use/load it from a file?

Thanks!

-- Pasi

btw. I've created a wiki page where we can list all the tested/working graphics 
adapters:
http://wiki.xensource.com/xenwiki/XenVGAPassthroughTestedAdapters


I already added that suggestion to the 4.1 suggested features some days ago and planned to rebase the patches to 4.0 if they need any adjustments. One major change I'd like to see is dynamic (and thus optional) configuration of the mem space to be mapped and the BIOS file to be used
Could you explain "dynamic configuration of the mem space to be mapped"? do you mean MMIO memories?
(instead of configuration at compile time).
Also afair the previous patch set also had a maximum size (correct me if I'm wrong) for the BIOS size that was to small for recent (HD4800+) ATI devices.
What is the size of HD4800 bios? It can adjust memory map address definitions in hvmloader to solve it.

Regards,
Weidong

Best regards,
    Christian


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel