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

[Xen-devel] [PATCH 0/3][RFC] MSI/MSI-X support for dom0/driver domain

To: <keir@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] [PATCH 0/3][RFC] MSI/MSI-X support for dom0/driver domain
From: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
Date: Mon, 28 May 2007 16:01:32 +0800
Delivery-date: Mon, 28 May 2007 01:00:01 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: Aceg/meyAx6Tec21So+h5U+da/B2Qg==
Thread-topic: [PATCH 0/3][RFC] MSI/MSI-X support for dom0/driver domain
The attached patches add MSI/MSI-x support for domain0/driver domain.

I have tried it on x86_64 host and at least my E1000 network card works.
Because some issues are not certain, especially for driver domain
support, so I do want to get some feedback before further work. 

The basic idea of the msi/msi-x support including:
1) Keep msi/msix configuration space access and msi-x mmio access in
domain0.
2) xen has no idea of msi/msi-x specific information, but will ack the
interrupt. A new interrupt type msi_irq_type is added, with similar
function as IOAPIC edge interrupt.
3) Keep PIRQ as a global resource controlled by domain0 (except those
owned by xen).

The new_file.patch just copy files that will be changed to sparse tree.
The msi_xen_dom0.patch support xen/domain0 side.
The msi_domU.patch support for driver domain.
I listed the issues in following mails.

Hope your feedback.

Thanks
Yunhong Jiang

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

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-devel] [PATCH 0/3][RFC] MSI/MSI-X support for dom0/driver domain, Jiang, Yunhong <=