From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:59078) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SW9Jg-0003s3-6B for qemu-devel@nongnu.org; Sun, 20 May 2012 12:49:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SW9Je-0006UO-IY for qemu-devel@nongnu.org; Sun, 20 May 2012 12:49:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59943) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SW9Je-0006UH-AO for qemu-devel@nongnu.org; Sun, 20 May 2012 12:49:10 -0400 Date: Sun, 20 May 2012 19:49:05 +0300 From: Gleb Natapov Message-ID: <20120520164905.GD26391@redhat.com> References: <20120520125936.GM10209@redhat.com> <4FB8F3F5.6010903@redhat.com> <20120520135733.GN10209@redhat.com> <4FB90110.1000003@redhat.com> <20120520144338.GO10209@redhat.com> <4FB903D6.5090205@redhat.com> <20120520151544.GP10209@redhat.com> <20120520161637.GB16818@morn.localdomain> <4FB91B04.30505@redhat.com> <20120520163913.GA18509@morn.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120520163913.GA18509@morn.localdomain> Subject: Re: [Qemu-devel] [PATCH 3/3] Get system state configuration from QEMU and patch DSDT with it. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Kevin O'Connor Cc: seabios@seabios.org, Avi Kivity , qemu-devel@nongnu.org On Sun, May 20, 2012 at 12:39:13PM -0400, Kevin O'Connor wrote: > On Sun, May 20, 2012 at 07:25:40PM +0300, Avi Kivity wrote: > > On 05/20/2012 07:16 PM, Kevin O'Connor wrote: > > > > Here we in agreement, and I was against patching till it was unavoidable, > > > > but than pci hotplug started using it, and afterwards processor > > > > definitions, so no point in avoiding it now by using inferior methods. > > > > > > I agree as well. > > > > > > What's the background to needing to have dynamic S3/S4 definitions? > > > (Why will some qemu instances be able to sleep and not others?) > > > > > > > Backwards compatibility. qemu has a -M machine-type option that expose > > an old qemu's guest-visible attributes. If an old qemu didn't support > > S3, then -M old shouldn't either. > > The DSDT has claimed S3, S4, and S5 support since SeaBIOS has > supported ACPI. What's the background to the requirement to stop > claiming support for it? > Not all guests have working S3/S4 implementation. We want management to be able to disable S3/S4 for such guests. S4 value changes since we want to distinguish between S4 and S5 in qemu. -- Gleb.