ChangeLog/9.2

Release schedule: Planning/9.2.

System emulation

Removed features and incompatible changes

Consult the 'Removed features' page for details of suggested replacement functionality.

New deprecated options and features

Consult the "Deprecated Features" chapter of the QEMU System Emulation User's Guide for further details of the deprecations and their suggested replacements.

Arm

• New CPU architectural features emulated:
  • FEAT_EBF16

• Changes to existing board models:
  • sbsa-ref now has an SMMU capable of two-stage translation
  • the virt board now has an SMMU capable of two-stage translation
  • xilinx-zynq-a9 now enables the Security Extensions on the CPU

• gdbstub
  • Now support MTE in system mode (under TCG emulation)

• The hvf accelerator now supports creating VMs with larger than 36 bit address space (and thus 64GB or more of RAM), when the host is macos 15 or newer and the host CPU supports it

• Some older machine types which were deprecated in the 9.0 release have now been removed: akita, borzoi, cheetah, connex, mainstone, n800, n810, spitz, terrier, tosa, verdex, z2

HPPA

• Fix saving and restoring PSW V-Bit (division step) accross interrupts
• Fix linux-user emulation issues on 64-bit CPU

Renesas SH (sh4)

• The unmaintained "shix" machine has been removed
• The big endian system emulation ("qemu-system-sh4eb") has been disabled since there was no usable machine left for this target

SPARC

• Implement a single entry floating-point exception queue for sparc v7/v8. This fixes a hang on Solaris 7, which assumes the queue exists and is non-empty on entry to the exception handler.

Device emulation and assignment

virtio

• virtio-mem now supports suspend/resume on x86-64.

Crypto subsystem

• The glib crypto backend now supports the SHA-384 hash
• A Linux bug that would cause the PBKDF code that estimates iterations to sometimes hang has been worked around by running in a new throwaway thread
• IOtests expected output has been fixed for recent gnutls changes
• Error reporting has been improved for unsupported cipher modes
• Memory leak fixed when dealing with unsupported cipher modes

TCG Plugins

• Deprecated for TCI backend
• Deprecated for 32 bit hosts
• Extended the memory API to provide the value used
• Fixed a timer deadlock if time doesn't change
• Fixed a bug in IPS plugin to avoid not changing time
• Added cflow plugin
• New memory API for reading vaddr
• Added basic block vector plugin

Migration

• Added QATZIP support for multifd compressors.
• Fixed one multifd race condition crash (against received bitmap).

Build Information

Configuration

• The gitlab-runner ansible script has been updated

Docker Tweaks

• Updated i686 and mipsel images to bookworm

Known issues

• See https://gitlab.com/qemu-project/qemu/-/milestones/14