From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:35320) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ScYU8-0006Gl-9Q for qemu-devel@nongnu.org; Thu, 07 Jun 2012 04:54:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ScYU6-0003dK-QH for qemu-devel@nongnu.org; Thu, 07 Jun 2012 04:54:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39284) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ScYU6-0003dF-IA for qemu-devel@nongnu.org; Thu, 07 Jun 2012 04:54:26 -0400 Message-ID: <4FD06C39.3020701@redhat.com> Date: Thu, 07 Jun 2012 10:54:17 +0200 From: Gerd Hoffmann MIME-Version: 1.0 References: <1338953515.7150.150.camel@pasglop> <4FCEEDC5.7090807@us.ibm.com> <1339017219.7150.170.camel@pasglop> <4FD06725.70905@redhat.com> <1339058438.24838.15.camel@pasglop> In-Reply-To: <1339058438.24838.15.camel@pasglop> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [qemu-devel][RFC] Enable usb with default options List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Benjamin Herrenschmidt Cc: Hans de Goede , Anthony Liguori , li zhang , qemu-devel@nongnu.org, zhlcindy@linux.vnet.ibm.com Hi, > Would it be possible to "whitelist" the QEMU emulated HID devices > in the kernel to enable dynamic PM for them (at least when they sit > alone on the bus) ? Or is our emulation busted too ? The emulation was fixed a while ago (IIRC 0.14+ works correctly). upstream udev got rules to enable pm for (fixed) qemu hid devices. So with recent linux guests this shouldn't be an issue any more. Older linux distros and windows guests do still suffer without manual invention though. cheers, Gerd