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Xen 4.21.0-rc1

Xen: 4.21.0-rc1 Release

Release date:
November 10, 2025
Previous version:
4.21-dev (released February 21, 2025)
Magnitude:
55,197 Diff Delta
Contributors:
43 total committers
Data confidence:
Commits:
1,085 impacting commits

1085 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: 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
xen/arm: ffa: Introduce VM to VM support
Authored August 11, 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

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Top Contributors in 4.21.0-rc1

andyhhp
jbeulich
royger
oleksii-kurochko-ff5d
jgross1
Pennyzct
anthonyper-ctx
luca-fancellu
wbenny
jandryuk

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