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/
Home Products Support Community News


RE: [Xen-devel] Question about evtchn_callback reentry

To: "Keir Fraser" <keir@xxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Question about evtchn_callback reentry
From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
Date: Wed, 20 Dec 2006 11:03:43 +0800
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Tue, 19 Dec 2006 19:04:17 -0800
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: AcciZU0dbGSEqQXwQrycerXX2pFPWAAIgEAJAAAfzJAAA9BF0QAE0ffJAE4l/cA=
Thread-topic: [Xen-devel] Question about evtchn_callback reentry
Keir Fraser write on 2006年12月18日 21:42:
> On 18/12/06 11:24, "Keir Fraser" <keir@xxxxxxxxxxxxx> wrote:
> Okay, so I remember now that of course the APIC divides these into 16
> priority levels so that does rather restrict the maximum nesting.
> I'll be happy to consider adding prioritisation (or just complete
> disallow of nesting) for 3.0.5. 

Hi Keir,

I did a experiment,
If we completely disallow of nesting.
Even dom0 can't boot.

I suspected timer interrupt is blocked by other events.


>  -- Keir

Xen-devel mailing list