ChangeLog/2.6

• MTP: initial support for events
• fw_cfg: DMA support
• ARM Virt: support for power button
• KVM: support for "split irqchip"
• aio=native requires cache=none (deprecated since 2.3)
• secrets (supported by tls-creds):

$QEMU -object secret,id=sec0,data=letmein
$QEMU -object secret,id=sec0,file=mypasswd.txt
$QEMU -object secret,id=sec0,file=mypasswd.txt,format=base64
 + encrypted case

• improved SD compatibility
• IPMI support (internal BMC or OpenIPMI lanserv simulator)
• nvdimm?
• SDL2 OpenGL support
• New pSeries machines use XHCI as the host controller instead of OHCI
• linux-user?
• ARM Virt: support -nic
• qemu-char logfile
• vnc supports ipv4=off and ipv6=off
• xlnz-zynqmp support SPI controllers
• xlnx-ep108 flash
• ARM: support separate EL3 address sapce
• i386: KVM: support for PKU and for migrating the TSC rate
• FDC: support for changing disk geometry (e.g. changing from a 1.44 MB disk to a 2.88 MB disk)
• qemu-char: TLS encrypted TCP chardev
• Improved support for migration of g3beige and mac99 machines
• PPC: gdbstb: VSX support
• nvme: support for bootindex
• -trace enable=...
• -d trace:PATTERN
• ARM: raspi2 machine
• SAS1068 device

System emulation

Incompatible changes

• The experimental x-drive option for the sdhci-pci device has been removed. Instead of passing a drive directly to the SD controller device you now must create an SD card object (which will automatically be plugged into the SD controller), so "-device sdhci-pci,x-drive=mydrive -drive id=mydrive,[...]" becomes "-device sdhci-pci -device sd-card,drive=mydrive -drive id=mydrive,[...]".

ARM

• AArch64 KVM: support for guest debugging (software and hardware breakpoints, single step)

s390

• The s390-virtio machine has been removed.
• Fixes and improvements in s390x PCI support

Device emulation and assignment

VFIO

• Support for AMD XGBE platform passthrough
• Helpers for extracting host device tree properties

virtio

• Performance improvements via optimized vring accesses