ChangeLog/1.2

System emulation

The new monitor command "dump-guest-memory" creates an ELF dump of the guest memory.
New board model: i.MX31

The pSeries target correctly creates segment size device tree nodes (fixes odd bugs with HV vs PR KVM)
The pSeries target implements an IOMMU.
... pSeries VGA, USB, etc.? ...
The E500 target generates its device tree dynamically
New mpc8544ds -machine option: dumpdtb. This allows to dump the dynamically generated device tree to a file.
Emulation for e5500 cores

Support for PCI passthrough is available for Xen fully-virtualized domains.
The new monitor command "dump-guest-memory" creates an ELF dump of the guest memory.
When using KVM, the in-kernel APIC supports MSI.

VGA and QXL cards (obtained with -vga std and -vga qxl) have 16 MB of VRAM rather than 8 MB.
Three new SCSI host bus adapter devices are available: am53c974 and dc390 emulate respectively an AMD PCI PCscsi and a Tekram DC-390 device, both of which are supported on older operating systems including MS DOS 6.2, MS Windows 3.11, 98 SE, NT 3.1 and NT 4.0. megasas emulated an LSI SAS1078 RAID controller. The next version of SeaBIOS will support booting from am53c974 and dc390 disks.
An USB-attached SCSI controller is now available.

The guestfwd argument to slirp now supports running an arbitrary command on every TCP connection (as in inetd). This is invoked by specifying a target that starts with "cmd:".

Emulated IDE and SCSI devices can now switch the cache mode between writethrough and writeback.
Emulated SCSI devices can be given a custom vendor name, product name and WWN.
Improved support for passthrough of SCSI tapes and media changers.
libiscsi can be used together with scsi-generic to pass iSCSI tapes and media changers to the guest.
When raw files are streamed, parts of the files that are holes in the underlying filesystem are treated as unallocated (as long as the OS supports either the FIEMAP ioctl or the SEEK_HOLE/SEEK_DATA modes)

qcow2 images support a new option, lazy_refcounts. If on, the speed of cache=writethrough mode will be improved, at the cost of requiring an fsck-like pass (and thus QEMU 1.2) to use the image again after a power loss.