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From: Gerd Hoffmann <kraxel@redhat.com>
To: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: vineshp@xilinx.com, edgar.iglesias@gmail.com,
	john.williams@xilinx.com, qemu-devel@nongnu.org,
	peter.maydell@linaro.org
Subject: Re: [Qemu-devel] [PATCH v1 3/8] usb/ehci: seperate out PCIisms
Date: Thu, 25 Oct 2012 14:57:54 +0200	[thread overview]
Message-ID: <50893752.4060803@redhat.com> (raw)
In-Reply-To: <CAEgOgz4Y7M8gJb9H_0MCvSOPziEzOkVwEwvJnUo3T3iYu=OmeQ@mail.gmail.com>

  Hi,

>> ... then you don't need to fiddle with the versions as the vmstate wire
>> format doesn't change then.
>>
> 
> Does that work considering you have turned one layer of VMSD into two?
> Can it equivocate machines saved with the old all-in-one vmsd with
> this new one that is structured in two layers?

I'm pretty sure it does as only for top-level vmsd name and version are
stuffed into the wire bytestream.  For sub-vmsds only the actual fields
are written.  So moving stuff from the toplevel vmsd into another one
which then gets referenced via VMSTATE_STRUCT doesn't change the format.

cheers,
  Gerd

  reply	other threads:[~2012-10-25 12:58 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-25  9:47 [Qemu-devel] [PATCH v1 0/8] Sysbus EHCI + Zynq USB Peter Crosthwaite
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 1/8] usb/ehci: parameterise the register region offsets Peter Crosthwaite
2012-10-25 12:04   ` Gerd Hoffmann
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 2/8] usb/ehci: Abstract away PCI DMA API Peter Crosthwaite
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 3/8] usb/ehci: seperate out PCIisms Peter Crosthwaite
2012-10-25 12:08   ` Gerd Hoffmann
2012-10-25 12:44     ` Peter Crosthwaite
2012-10-25 12:57       ` Gerd Hoffmann [this message]
2012-10-25 13:19         ` Peter Crosthwaite
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 4/8] usb/ehci: Add usb-ehci-sysbus Peter Crosthwaite
2012-10-25  9:55   ` Peter Maydell
2012-10-25 13:17     ` Avi Kivity
2012-10-25 12:10   ` Gerd Hoffmann
2012-10-25 12:39     ` Peter Crosthwaite
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 5/8] xilinx_zynq: add USB controllers Peter Crosthwaite
2012-10-25 12:12   ` Gerd Hoffmann
2012-10-25 12:16     ` Peter Maydell
2012-10-25 12:56       ` Peter Crosthwaite
2012-10-25 13:14         ` Gerd Hoffmann
2012-10-25 13:24           ` Peter Crosthwaite
2012-10-25 13:49             ` Gerd Hoffmann
2012-10-25 14:10               ` Gerd Hoffmann
2012-10-25 23:54                 ` Peter Crosthwaite
2012-10-25 23:59                   ` Peter Crosthwaite
2012-10-26  6:49                     ` Gerd Hoffmann
2012-10-26  6:59                       ` Peter Crosthwaite
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 6/8] usb/ehci: Guard definition of EHCI_DEBUG Peter Crosthwaite
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 7/8] usb/ehci: Debug mode compile fixes Peter Crosthwaite
2012-10-25  9:47 ` [Qemu-devel] [PATCH v1 8/8] usb/ehci: Put RAM in undefined MMIO regions Peter Crosthwaite
2012-10-25 12:19   ` Gerd Hoffmann
2012-10-25 13:03     ` Peter Crosthwaite
2012-10-25 13:12       ` Peter Maydell
2012-10-25 13:21         ` Avi Kivity
2012-10-25 13:28           ` Peter Maydell
2012-10-25 13:41             ` Avi Kivity
2012-10-25 13:50               ` Peter Maydell
2012-10-25 13:57                 ` Avi Kivity
2012-10-25 13:59                 ` Peter Crosthwaite
2012-10-25 14:08                   ` Peter Maydell
2012-10-25 13:20       ` Avi Kivity
2012-10-29 14:08 ` [Qemu-devel] [PATCH v1 0/8] Sysbus EHCI + Zynq USB Peter Crosthwaite
2012-10-30  7:20   ` Gerd Hoffmann
2012-10-30  8:24     ` Peter Crosthwaite
2012-10-30 10:30       ` Gerd Hoffmann
2012-10-30 12:14       ` Andreas Färber

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