ChangeLog/1.1

System emulation

All targets

• qdev properties of type hex8 and hex32 used to accept hexadecimal values not prefixed with "0x"; the prefix is mandatory starting with this version. These properties are: iobase, membase, io_base for all devices that support the properties; vram_size for sysbus-g364 and SUNW,tcx; version for sb16 and iommu; ctl_iobase and data_iobase for fw_cfg; readback for debugcon; elcr_addr and elcr_mask for i8259.
  PCI addresses can still be addressed with a pair of hexadecimal device and function without a "0x" prefix.
• -kernel, -initrd and -append are now aliases for suboptions of -machine (for example -machine kernel=foo), and as such they are also available with -readconfig.

ARM

• The syborg machine type has been removed since the Symbian Virtual Platform is no longer relevant with the disbanding of Symbian.
• A device tree can be passed to the kernel using -dtb option (or alternatively -machine dtb=...).
• [new machine types]

PowerPC

• Bamboo now works with TCG
• Pseries handles PCI
• Pseries works with PR KVM

S/390

• -kernel now also supports ELF binaries
• -kernel can boot new guest kernels
• Devices can now be hotplug add'ed (remove is not there yet)

x86

• NMIs are correctly injected through the LAPIC (rather than sent directly to the guest CPU) and respect the LINT1 mask, thus fixing kdump.
• The -rtc-td-hack option is now available as a qdev property (-global mc146818rtc.lost_tick_policy=slew) and as such can be specified in a -readconfig configuration file.
• [S3 support]
• KVM can optionally use kernel-based emulation of the local APIC, IOAPIC and i8259 PIC. This is supported with the -machine ...,kernel_irqchip=on command-line option. MSI is not supported yet when using the kernel_irqchip option.
• [pflash stuff]?

Device emulation

• The virtio-scsi device is now supported by QEMU. The guest driver will be supported in Linux starting at version 3.4.
• QEMU now includes experimental support for USB 3.0 (xHCI).

Block devices

• QEMU's NBD client implementation and the qemu-nbd server both fully support asynchronous I/O.
• [group snapshots]
• [streaming]

Live Migration, Save/Restore

• Live migration (or save/restore) from QEMU releases prior to 0.13 to QEMU 1.1 is not supported

Guest agent

• qemu-ga has been ported to Windows.

Host support

• System emulation on ARM hosts was broken in 1.0 and works again

User-mode emulation

• User-mode emulation can provide some information from the /proc filesystem.