xen hypervisor x86 · Supported

Maintainers

• M Juergen Gross <jgross@suse.com>
• R Boris Ostrovsky <boris.ostrovsky@oracle.com>

Paths

• F arch/x86/configs/xen.config
• F arch/x86/include/asm/pvclock-abi.h
• F arch/x86/include/asm/xen/
• F arch/x86/platform/pvh/
• F arch/x86/xen/

Last 30 days

Active reviewers (last 30 days)

• David Woodhouse <hidden>
  3 attestations (3 Reviewed-by) · last on 2026-07-01

Recent patches

Most-recent 30 patches in this subsystem on virtualization (capped at 30), ordered by date desc.

• WARM1d REVIEWED: 1 (0M) [PATCH v5 38/51] x86/xen/time: Mark xen_setup_vsyscall_time_info() as __init
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• WARM1d REVIEWED: 1 (0M) [PATCH v5 36/51] x86/paravirt: Pass sched_clock save/restore helpers during registration
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• WARM1d REVIEWED: 1 (0M) [PATCH v5 33/51] x86/xen/time: NOP-ify x86_platform's sched_clock save/restore hooks
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• WARM1d [PATCH v5 14/51] x86/tsc: Consolidate forcing of X86_FEATURE_TSC_KNOWN_FREQ for PV code
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• WARM1d [PATCH v5 11/51] x86/tsc: Add dedicated hypervisor hooks for getting known TSC/CPU frequencies
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• COOLING9d [PATCH v4 15/18] x86/paravirt: Switch MSR access pv_ops functions to instruction interfaces
  2026-06-29 · Juergen Gross <jgross@suse.com>
• COOLING9d [PATCH v4 13/18] x86/paravirt: Split off MSR related hooks into new header
  2026-06-29 · Juergen Gross <jgross@suse.com>
• WARM2d [PATCH 31/32] treewide: convert rdmsrq() from a macro to an inline function
  2026-06-29 · Juergen Gross <jgross@suse.com>
• COLD27d Re: [PATCH v6 5/7] locking: Add contended_release tracepoint to qspinlock
  2026-06-03 · Peter Zijlstra <peterz@infradead.org>
• COLD29d REVIEWED: 1 (0M) [PATCH v4 35/47] x86/xen/time: Mark xen_setup_vsyscall_time_info() as __init
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• COLD29d REVIEWED: 1 (0M) [PATCH v4 33/47] x86/paravirt: Pass sched_clock save/restore helpers during registration
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• COLD29d [PATCH v4 30/47] x86/xen/time: NOP-ify x86_platform's sched_clock save/restore hooks
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• COLD29d [PATCH v4 21/47] x86/xen: Obtain TSC frequency from CPUID if present
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• COLD29d [PATCH v4 10/47] x86/tsc: Consolidate forcing of X86_FEATURE_TSC_KNOWN_FREQ for PV code
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• COLD29d [PATCH v4 08/47] x86/tsc: Add dedicated hypervisor hooks for getting known TSC/CPU frequencies
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• COLD37d [PATCH 4/5] x86/xen: Get rid of last XEN_LAZY_MMU uses
  2026-05-26 · Juergen Gross <jgross@suse.com>
• COLD42d REVIEWED: 2 (0M) [PATCH v3 31/41] x86/tsc: Pass KNOWN_FREQ and RELIABLE as params to registration
  2026-05-15 · Sean Christopherson <seanjc@google.com>
• COLD42d [PATCH v3 20/41] x86/xen/time: Mark xen_setup_vsyscall_time_info() as __init
  2026-05-15 · Sean Christopherson <seanjc@google.com>
• COLD42d [PATCH v3 18/41] x86/paravirt: Pass sched_clock save/restore helpers during registration
  2026-05-15 · Sean Christopherson <seanjc@google.com>
• COLD42d [PATCH v3 15/41] x86/xen/time: Nullify x86_platform's sched_clock save/restore hooks
  2026-05-15 · Sean Christopherson <seanjc@google.com>
• COLD42d REVIEWED: 2 (0M) [PATCH v3 02/41] x86/tsc: Add helper to register CPU and TSC freq calibration routines
  2026-05-15 · Sean Christopherson <seanjc@google.com>
• STALE97d [PATCH v3 14/16] x86/paravirt: Switch MSR access pv_ops functions to instruction interfaces
  2026-02-18 · Juergen Gross <jgross@suse.com>
• STALE97d [PATCH v3 12/16] x86/paravirt: Split off MSR related hooks into new header
  2026-02-18 · Juergen Gross <jgross@suse.com>
• STALE146d [PATCH 3/3] x86/virt: rename x2apic_available to x2apic_without_ir_available
  2026-02-02 · Shashank Balaji <hidden>
• STALE130d [PATCH v4 3/3] x86/tlb: add architecture-specific TLB IPI optimization support
  2026-02-02 · Lance Yang <lance.yang@linux.dev>
• STALE105d [PATCH v4 2/6] x86/paravirt: Replace io_delay() hook with a bool
  2026-01-19 · Juergen Gross <jgross@suse.com>
• STALE174d [PATCH v3 1/5] x86/paravirt: Replace io_delay() hook with a bool
  2026-01-15 · Juergen Gross <jgross@suse.com>
• STALE139d [PATCH v5 21/21] x86/pvlocks: Move paravirt spinlock functions into own header
  2026-01-05 · Juergen Gross <jgross@suse.com>
• STALE139d REVIEWED: 17 (17M) [PATCH v5 12/21] x86/paravirt: Move paravirt_sched_clock() related code into tsc.c
  2026-01-05 · Juergen Gross <jgross@suse.com>
• STALE139d REVIEWED: 17 (17M) [PATCH v5 11/21] x86/paravirt: Use common code for paravirt_steal_clock()
  2026-01-05 · Juergen Gross <jgross@suse.com>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• COLD42d REVIEWED: 2 (0M) [PATCH v3 02/41] x86/tsc: Add helper to register CPU and TSC freq calibration routines
  2026-05-15 · Sean Christopherson <seanjc@google.com> · 1 Reviewed-by, 1 Tested-by
• COLD29d REVIEWED: 1 (0M) [PATCH v4 33/47] x86/paravirt: Pass sched_clock save/restore helpers during registration
  2026-05-29 · Sean Christopherson <seanjc@google.com> · 1 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE180d [PATCH v2 1/5] x86/paravirt: Replace io_delay() hook with a bool
  2025-12-16 · Juergen Gross <jgross@suse.com>
• STALE97d [PATCH v3 12/16] x86/paravirt: Split off MSR related hooks into new header
  2026-02-18 · Juergen Gross <jgross@suse.com>
• STALE97d [PATCH v3 14/16] x86/paravirt: Switch MSR access pv_ops functions to instruction interfaces
  2026-02-18 · Juergen Gross <jgross@suse.com>
• COLD37d [PATCH 4/5] x86/xen: Get rid of last XEN_LAZY_MMU uses
  2026-05-26 · Juergen Gross <jgross@suse.com>