Re: [Qemu-devel] [PATCH 3/3] Get system state configuration from QEMU and patch DSDT with it.

[Kevin O'Connor]

On Sun, May 20, 2012 at 06:15:44PM +0300, Gleb Natapov wrote:
> On Sun, May 20, 2012 at 05:46:46PM +0300, Avi Kivity wrote:
> > On 05/20/2012 05:43 PM, Gleb Natapov wrote:
> > > > 
> > > > Or it can be a fixed address in low memory, or a scratch register in
> > > > hardware.
> > > > 
> > > Both will work (fixed addresses are better be avoided and who needs
> > > another PV device), but I do not see how either of them is better then
> > > patching. What is your concern?
> > >
> > 
> > Patching is harder to maintain.  Unfortunately it's unavoidable.
> > 
> 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?)

-Kevin