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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
	qemu-devel@nongnu.org, Isaku Yamahata <yamahata@valinux.co.jp>,
	Gerd Hoffmann <kraxel@redhat.com>,
	Igor Mammedov <imammedo@redhat.com>,
	Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCHv2] piix: fix up/down races + document
Date: Sun, 1 Apr 2012 12:06:16 +0300	[thread overview]
Message-ID: <20120401090616.GB22071@redhat.com> (raw)
In-Reply-To: <20120401082618.GA9265@redhat.com>

On Sun, Apr 01, 2012 at 11:26:18AM +0300, Gleb Natapov wrote:
> On Sun, Apr 01, 2012 at 11:22:33AM +0300, Michael S. Tsirkin wrote:
> > > And if pci-hotplug could be done as cpu-hotplug, then it would simplify pci-hotplug
> > > (guest would only need to read PCI_BASE) and probably it would be possible to unify hotplug
> > > code for pci/cpu. But that for sure will break compatibility.
> > 
> > Which isn't really acceptable.
> > 
> I do not think it should be taken for granted. We should be able to get
> rid of a crud once in a while.

In general, yes. It needs to be well planned several years in
advance though. Something like
http://www.kernel.org/doc/Documentation/feature-removal-schedule.txt
might be a model.

Breaking compatibility would bring very little
gain in this case though, right?

> --
> 			Gleb.

  reply	other threads:[~2012-04-01  9:06 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-29 12:51 [Qemu-devel] [PATCHv2] piix: fix up/down races + document Michael S. Tsirkin
2012-03-29 13:04 ` Gleb Natapov
2012-03-29 13:30   ` Michael S. Tsirkin
2012-03-29 16:53 ` Alex Williamson
2012-03-29 19:38   ` Michael S. Tsirkin
2012-03-29 19:52     ` Alex Williamson
2012-03-30 12:19       ` Michael S. Tsirkin
2012-03-30 16:05 ` Igor Mammedov
2012-04-01  8:22   ` Michael S. Tsirkin
2012-04-01  8:26     ` Gleb Natapov
2012-04-01  9:06       ` Michael S. Tsirkin [this message]
2012-04-01  9:13         ` Gleb Natapov
2012-04-01  9:19           ` Gleb Natapov
2012-04-01  9:24 ` Gleb Natapov

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