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] Buffered IO for IO?

To: "Zulauf, John" <john.zulauf@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Buffered IO for IO?
From: Keir Fraser <keir@xxxxxxxxxxxxx>
Date: Sat, 21 Jul 2007 10:44:35 +0100
Delivery-date: Sat, 21 Jul 2007 02:38:51 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <BD262A443AD428499D90AF8368C4528D8A166C@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
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: AcfJ+4xa03nXqi+ITfuOyWNblE0QKgBGW8swABmw4XE=
Thread-topic: [Xen-devel] Buffered IO for IO?
User-agent: Microsoft-Entourage/11.3.3.061214


On 20/7/07 22:33, "Zulauf, John" <john.zulauf@xxxxxxxxx> wrote:

> Has anyone experimented with adding Buffered IO support for "out"
> instructions?  Currently, the buffered io pages is only used for mmio
> writes (and then only to vga space).  It seems quite straight-forward to
> add.

Is it safe to buffer, and hence arbitrarily delay, any I/O port write?

 -- Keir


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