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Xen RELEASE-4.20.1

Xen: RELEASE-4.20.1 Release

Release date:
September 10, 2025
Previous version:
RELEASE-4.20.0 (released March 4, 2025)
Magnitude:
3,736 Diff Delta
Contributors:
13 total committers
Data confidence:
Commits:
131 impacting commits

131 Commits in this Release

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

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
x86/spec-ctrl: Mitigate Transitive Scheduler Attacks
Authored August 29, 2024
x86/thunk: Build Xen with Return Thunks
Authored April 7, 2025
x86/idle: Remove broken MWAIT implementation
Authored July 1, 2025
x86/ucode: Digests for TSA microcode
Authored September 27, 2024
x86/idle: Implement a new MWAIT IPI-elision algorithm
Authored July 1, 2025
CI: save toolstack artifact as cpio.gz
Authored April 11, 2025
CI: Switch to new argo artefact
Authored April 10, 2025
xen/softirq: Rework arch_skip_send_event_check() into arch_set_softirq()
Authored July 1, 2025
x86/idle: Rearrange VERW and MONITOR in mwait_idle_with_hints()
Authored April 2, 2025
update Xen version to 4.20.1-pre
Authored March 20, 2025
x86/guest: Remove use of the Xen hypercall_page
Authored April 21, 2025
x86/idle: Remove MFENCEs for CLFLUSH_MONITOR
Authored April 1, 2025
x86/cpu-policy: Simplify logic in guest_common_default_feature_adjustments()
Authored June 27, 2025
x86/alternative: Support replacements when a feature is not present
Authored April 21, 2025
x86/vpci: fix handling of BAR overlaps with non-hole regions
Authored June 26, 2025
x86/idle: Convert force_mwait_ipi_wakeup to X86_BUG_MONITOR
Authored July 1, 2025
x86/idle: Fix buggy "x86/mwait-idle: enable interrupts before C1 on Xeons"
Authored July 2, 2025
automation/cirrus-ci: use matrix keyword to generate per-version build tasks
Authored March 15, 2025
CI: Build with --prefix=/usr rather than setting LD_LIBRARY_PATH
Authored April 15, 2025
CI: Rename intermediate artefacts in qemu-* scripts
Authored April 12, 2025
x86/PVH: account for module command line length
Authored March 27, 2025
x86/idle: Move monitor()/mwait() wrappers into cpu-idle.c
Authored April 1, 2025
Revert part of "x86/mwait-idle: disable IBRS during long idle"
Authored June 24, 2025
automation: skip building domU if there is no test defined for it
Authored February 19, 2025
x86/cpu-policy: Rearrange guest_common_*_feature_adjustments()
Authored June 27, 2025
x86/emul: Fix extable registration in invoke_stub()
Authored May 15, 2025
x86/pv: fix emulation of wb{,no}invd to flush all pCPU caches
Authored June 26, 2025
CI: increase verbosity of starting a domain
Authored April 7, 2025
x86/idle: undo use of MONITOR/MWAIT mnemonics
Authored July 9, 2025
x86/idle: Drop incorrect smp_mb() in mwait_idle_with_hints()
Authored July 1, 2025
compat/memory: avoid UB shifts in XENMEM_exchange handling
Authored April 29, 2025
x86/pmstat: Check size of PMSTAT_get_pxstat buffers
Authored June 26, 2025
ci: add Intel KabyLake HW runner
Authored March 31, 2025
xen: remove -N from the linker command line
Authored April 29, 2025
CI: Include microcode for x86 hardware jobs
Authored April 11, 2025
automation/cirrus-ci: store Xen Kconfig before doing a build
Authored March 14, 2025
automation/cirrus-ci: build XTF
Authored March 14, 2025
CI: Update x86 tests from Linux 6.1.19 to 6.6.56
Authored April 9, 2025

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Top Contributors in RELEASE-4.20.1

andyhhp
marmarek
jbeulich
royger
rosslagerwall
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