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


[Xen-devel] [PATCH 7/9] Add cpu idle pwr mgmt to xen

To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] [PATCH 7/9] Add cpu idle pwr mgmt to xen
From: "Wei, Gang" <gang.wei@xxxxxxxxx>
Date: Fri, 25 Apr 2008 13:08:59 +0800
Delivery-date: Thu, 24 Apr 2008 22:14:23 -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: AcimkngrQ6lM6BwSTl6IssdXQAGTAw==
Thread-topic: [PATCH 7/9] Add cpu idle pwr mgmt to xen
Add acpi C3 support for x86.

C3 & deep C state will need to do ARB_DIS or cache flush. ARB_DIS should
be done within the last cpu which is ready for C3. Bus master activities
are checked and recorded for C state promotion/demotion judgement.

C3 is disabled by default, till TSC/APIC stop issues resolved.
Adding cmdline option "max_cstate=3" can enable C3.

Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>

Attachment: xen-4-deepc-0425.patch
Description: xen-4-deepc-0425.patch

Xen-devel mailing list
<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-devel] [PATCH 7/9] Add cpu idle pwr mgmt to xen, Wei, Gang <=