From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Hellstrom Subject: KMS cursor BO semantics Date: Fri, 04 Nov 2011 12:59:59 +0100 Message-ID: <4EB3D3BF.70909@vmware.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp-outbound-2.vmware.com (smtp-outbound-2.vmware.com [65.115.85.73]) by gabe.freedesktop.org (Postfix) with ESMTP id CC1AE9E99F for ; Fri, 4 Nov 2011 05:02:30 -0700 (PDT) Received: from mailhost3.vmware.com (mailhost3.vmware.com [10.16.27.45]) by smtp-outbound-2.vmware.com (Postfix) with ESMTP id 84A2A51006 for ; Fri, 4 Nov 2011 05:02:30 -0700 (PDT) Received: from linlap1.home.shipmail.org (unknown [10.23.99.61]) by mailhost3.vmware.com (Postfix) with ESMTP id 64AB4CDABE for ; Fri, 4 Nov 2011 05:02:28 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: "dri-devel@lists.freedesktop.org" List-Id: dri-devel@lists.freedesktop.org Hi. I have a question about the semantics of the DRM_IOCTL_MODE_CURSOR iotcl: Some hardware (vmware's virtual in particular) may not be able to pick up the changes from a bo directly, since the cursor data is sent though the command stream. Hence we need a notification when the cursor image has changed. Could we *require* that a cursor image change needs to be followed by an ioctl call with the flag DRM_MODE_CURSOR_BO? Thanks, Thomas