ChangeLog/9.1

Release schedule: Planning/9.1.

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_NMI
  • FEAT_CSV2_3
  • FEAT_ETS2
  • FEAT_Spec_FPACC
  • FEAT_WFxT

• The 'max' CPU and any new CPU types will default to a 1GHz generic timer frequency rather than the old 62.5MHz (this is architecturally required from ARMv8.6 onwards)
• The emulated GICv3 also now has NMI support

• Changes to existing board models:
  • Add DM163 display to B-L475E-IOT01A board
  • xilinx_zynq: The cache controller is now present
  • xilinx_zynq: Now supports up to two CPU cores
  • sbsa-ref: The default CPU type is now Neoverse-N2

Device emulation and assignment

TPM

• Supports emulation of MCQ behaviour based on UFSHCI v4.0.
• MCQ Parameter Usage:

-device ufs,mcq=true,mcq-maxq=8

GUI

• Allow UNIX socket option for VNC websocket

TCG Plugins

• added STORE_U64 and conditional callback ops
• updated examples to use new ops

Migration

• New 'exit-on-error' option to migrate-incoming, if set to false causes QEMU to not exit on incoming migration failure, giving the management layer an opportunity to fetch the error through QMP.

Known issues

• See https://gitlab.com/qemu-project/qemu/-/milestones/13