Home » Oreps » Xen » All Releases » 4.21.0-rc1 Release

xen-project/xen

Mirror of the Xen Repository (PRs not accepted see: http://wiki.xenproject.org/wiki/Submitting_Xen_Project_Patches)

Watch

Basic Details Issues Addressed Top Contributors Directory Browser

Xen 4.21.0-rc1

Xen: 4.21.0-rc1 Release

Release date:

October 7, 2025

Previous version:

4.21-dev (released February 21, 2025)

Magnitude:

52,057 Diff Delta

Contributors:

48 total committers

Data confidence:

Commits:

1,084

1084 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

libxl: Convert libxl__object_to_json() to json-c

Authored September 29, 2025

pdx: introduce a new compression algorithm based on region offsets

Authored August 12, 2025

xen/arm: ffa: Introduce VM to VM support

Authored August 11, 2025

xen/arm: scmi-smc: passthrough SCMI SMC to domain, single agent

Authored September 4, 2025

xen/cpufreq: implement amd-cppc driver for CPPC in passive mode

Authored September 25, 2025

ARM: ITS: implement quirks and add support for Renesas Gen4 ITS

Authored January 15, 2025

xen/riscv: identify specific ISA supported by cpu

Authored March 6, 2025

hvmloader: fix SMBIOS table length checks

Authored August 27, 2025

tools/tests: Drop depriv-fd-checker

Authored May 20, 2025

xen/riscv: imsic_init() implementation

Authored July 9, 2025

xen/arm: add support for PCI child bus

Authored June 12, 2025

CI: unify x86 XTF test runner

Authored April 22, 2025

x86/boot: introduce boot domain

Authored April 9, 2025

xen/riscv: implementation of aplic and imsic operations

Authored July 10, 2025

tootls/tests: introduce unit tests for rangesets

Authored April 3, 2025

automation: Update ECLAIR analysis configuration

Authored February 14, 2025

pdx: provide a common set of init functions

Authored June 9, 2025

test/pdx: add PDX compression unit tests

Authored June 17, 2025

xen/domain: unify domain ID allocation

Authored August 29, 2025

tools/tests: introduce unit tests for domain ID allocator

Authored August 29, 2025

CI: avoid repacking initrd as part of the test job

Authored April 11, 2025

x86/stubs: Introduce place_ret() to abstract away raw 0xc3's

Authored May 4, 2025

xen: add new domctl get_domain_state

Authored March 6, 2025

tools/libs: add a new libxenmanage library

Authored March 6, 2025

x86/altp2m: Wrap altp2m-specific code in #ifdef CONFIG_ALTP2M

Authored August 25, 2025

x86/vmx: Remove HAVE_AS_{EPT,VMX}, GAS_VMX_OP(), etc

Authored April 3, 2025

xen/arm: smmuv2: Add PCI devices support for SMMUv2

Authored July 2, 2025

tools/cpufreq: extract CPPC para from cpufreq para

Authored September 25, 2025

x86/intel-family: Resync with Linux

Authored July 15, 2025

xen/cpufreq: implement amd-cppc-epp driver for CPPC in active mode

Authored September 25, 2025

arm/mpu: Enable read/write to protection regions for arm32

Authored June 17, 2025

xen/riscv: aplic_init() implementation

Authored July 10, 2025

ARM: Use asm_inline for ALTERNATIVE()

Authored May 15, 2025

xen/events: fix global virq handling

Authored March 7, 2025

x86/pv: Store the data segment selectors outside of cpu_user_regs

Authored December 30, 2024

xen/lib: Introduce SHA2-256

Authored December 13, 2024

xen/cpufreq: make _PSD info common

Authored July 17, 2025

vpci: Refactor REGISTER_VPCI_INIT

Authored July 30, 2025

x86/intel-family: Resync with Linux

Authored July 15, 2025

x86/IDT: Generate bsp_idt[] at build time

Authored January 3, 2025

Browse Other Releases

4.21.0-rc1 Released October 7, 2025

52,057 Δ

4.21-dev Released February 21, 2025

64 Δ

4.20.0-rc5 Released February 20, 2025

727 Δ

4.20.0-rc4 Released February 7, 2025

190 Δ

4.20.0-rc3 Released January 29, 2025

1,058 Δ

4.20.0-rc2 Released April 4, 2025

540 Δ

4.20.0-rc1 Released May 9, 2025

34,696 Δ

4.20-dev Released July 16, 2024

20 Δ

4.19.0-rc4 Released July 18, 2024

154 Δ

4.19.0-rc3 Released July 12, 2024

0 Δ

Top Contributors in 4.21.0-rc1

andyhhp

jbeulich

royger

oleksii-kurochko-ff5d

jgross1

denis-mukhin-5cae

Pennyzct

alejandro-vallejo-7c0b

luca-fancellu

anthonyper-ctx

Directory Browser for 4.21.0-rc1

We haven't yet finished calculating and confirming the files and directories changed in this release. Please check back soon.