ChangeLog/4.0
System emulation
Incompatible changes
New deprecated options and features
Consult the "Deprecated Features" appendix for the full list of historically deprecated features/options.
Alpha
68k
Arm
HPPA
Microblaze
MIPS
Nios2
OpenRISC
PowerPC
RISC-V
s390
- vfio-ap now no longer inhibits usage of memory ballooners
SH
SPARC
TileGX
Tricore
x86
Xtensa
Device emulation and assignment
ACPI
Audio
Block devices
Graphics
Input devices
IPMI
Network devices
NVDIMM
PCI/PCIe
SCSI
SMBIOS
TPM
USB
VFIO
virtio
Xen
fw_cfg
9pfs
Audio
Character devices
Crypto subsystem
- The block storage encryption backends are now capable of using multiple threads for encryption/decryption
GUI
Host support
Memory backends
Monitor
- QMP can now execute a few commands "out of band". This is useful for postcopy recovery. For details, see docs/interop/qmp-spec.txt.
Migration
Network
Block devices and tools
Tracing
Miscellaneous
User-mode emulation
TCG
Guest agent
Build Information
GIT submodules
Build Dependencies
Known issues
- see Planning/4.0