ChangeLog/6.0: Difference between revisions

From QEMU
Line 54: Line 54:
* OpenTitan memory layout update (Breaking change)
* OpenTitan memory layout update (Breaking change)
* Initial steps towards support for 32-bit CPUs on 64-bit builds
* Initial steps towards support for 32-bit CPUs on 64-bit builds
* Automate GDB XML generation (should fix GDB E14 errors)
* Sifive OTP handle OTP access failures
* Correctly generate a PMP failure when no PMP entry is configured
* Fix 32-bit Linux boot problems with DTB placement


=== s390 ===
=== s390 ===

Revision as of 16:43, 20 January 2021

System emulation

Incompatible changes

New deprecated options and features

Consult the "Deprecated Features" chapter of the QEMU System Emulation User's Guide for the full list of historically deprecated features/options.

68k

Alpha

Arm

  • QEMU now supports emulation of the Arm-v8.1M architecture and the Cortex-M55 CPU
  • Emulation of ARMv8.4-TTST extension is now supported
  • Emulation of ARMv8.4-SEL2 extension is now supported
  • Emulation of the PAuth extension now supports an optional IMPDEF pauth algorithm which is not cryptographically secure but is much faster to compute
  • xlnx-zynqmp boards now support the Xilinx ZynqMP CAN controllers
  • the sbsa-ref board now supports Cortex-A53/57/72 cpus
  • the xlnx-versal board now has USB support
  • the sabrelite board emulation has been improved and it can now run U-Boot
  • the npcm7xx boards now have ADC and PWM emulation
  • the gdbstub's representation of SVE registers allows GDB to properly handle aliasing

AVR

HPPA

Microblaze

MIPS

  • Loongson-3 "virt" machine added

Nios2

OpenRISC

PowerPC

  • Deprecated 'compat' property of server class POWER cpus removed (use the 'max-cpu-compat' machine option instead)
  • You can now explicitly choose 'kvm_type=auto' rather than only being able to do that by not setting it at all.

Renesas RX

Renesas SH

RISC-V

  • Improve the sifive_u DTB generation
  • Add QSPI NOR flash to Microchip PFSoC
  • Fix a bug in the Hypervisor HLVX/HLV/HSV instructions
  • Fix some mstatus mask defines
  • Ibex PLIC improvements
  • OpenTitan memory layout update (Breaking change)
  • Initial steps towards support for 32-bit CPUs on 64-bit builds
  • Automate GDB XML generation (should fix GDB E14 errors)
  • Sifive OTP handle OTP access failures
  • Correctly generate a PMP failure when no PMP entry is configured
  • Fix 32-bit Linux boot problems with DTB placement

s390

SPARC

TileGX

Tricore

x86

  • Intel PT can now be exposed to KVM guests when CPUID.(EAX=14,ECX=0).ECX[LIP] (bit 31) is 1. Previous versions only supported Intel PT when LIP=0
  • New sev-inject-launch-secret QMP command
  • The WHPX accelerator supports accelerated APIC ("-accel whpx,kernel-irqchip=on")

Xtensa

Device emulation and assignment

ACPI

Audio

Block devices

Graphics

Input devices

IPMI

Network devices

NVDIMM

NVMe

PCI/PCIe

SCSI

SD card

SMBIOS

TPM

USB

VFIO

virtio

Xen

fw_cfg

9pfs

virtiofs

Semihosting

  • Added support for RiscV (ARM style semihosting)
  • Added support for HEAPINFO, ELAPSED, TICKFREQ, TMPNAM and ISERROR to semihosting

Audio

Character devices

Crypto subsystem

experimental qmp interface

GUI

GDBStub

  • the stub now supports the Xfer:auxv:read for Linux user guests
  • the GDB stubs now uses the "official" gdb representation for SVE registers

Host support

Memory backends

Migration

Monitor

QMP

  • A new command set-action has been introduced. The command generalizes watchdog-set-action and allows changes to all the settings of the (also new) -action command line option.
  • New OOB commands yank and query-yank have been introduced. The yank command allows to recover from a hanging QEMU by shutting down sockets for example. See the QMP documentation for more information. The query-yank command lists the available things to yank.

HMP

Network

Block device backends and tools

Tracing

Miscellaneous

  • A new command line option -action, with suboptions panic, shutdown, reboot and watchdog. -action subsumes the pre-existing options -no-shutdown (-action panic=pause,shutdown=pause), -no-reboot (-action reboot=shutdown) and -watchdog-action; plus, it allows the user to choose whether guest panic should pause the guest (-action panic=pause), shut it down (-action panic=poweroff, the default) or be ignored (-action panic=none).

User-mode emulation

TCG

Guest agent

Build Information

  • New "gtags" build target for developers
  • checkpatch now better handles commit ids when checking

Python

GIT submodules

Container Based Builds

Build Dependencies

Windows

Testing and CI

Known issues