vmware hypervisor interface · Supported

Maintainers

• M Ajay Kaher <ajay.kaher@broadcom.com>
• M Alexey Makhalov <alexey.makhalov@broadcom.com>
• R Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>

Paths

• F arch/x86/include/asm/vmware.h
• F arch/x86/kernel/cpu/vmware.c

Last 30 days

Most active threads (last 7 days)

• WARM1d [PATCH v5 00/51] x86: Try to wrangle PV clocks vs. TSC
  2026-07-01 19:33 · 6 replies in 7d · Sean Christopherson <seanjc@google.com>

Active reviewers (last 30 days)

• David Woodhouse <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-07-01

Recent patches

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

• 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 34/51] x86/vmware: NOP-ify save/restore hooks when using VMware's sched_clock
  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>
• WARM1d [PATCH v5 02/51] x86/apic: Add CONFIG_X86_LOCAL_APIC=n stubs for apic_set_timer_period_{,k}hz()
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• WARM1d [PATCH v5 01/51] x86/apic: Provide helpers to set local APIC timer period in hz and khz
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• COLD24d 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>
• COLD24d [PATCH v4 31/47] x86/vmware: NOP-ify save/restore hooks when using VMware's sched_clock
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• COLD24d [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>
• COLD24d [PATCH v4 08/47] x86/tsc: Add dedicated hypervisor hooks for getting known TSC/CPU frequencies
  2026-05-29 · Sean Christopherson <seanjc@google.com>
• WARM3d [PATCH v7 001/120] treewide: Explicitly include the x86 CPUID headers
  2026-05-28 · "Ahmed S. Darwish" <darwi@linutronix.de>
• COLD36d 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>
• COLD36d [PATCH v3 18/41] x86/paravirt: Pass sched_clock save/restore helpers during registration
  2026-05-15 · Sean Christopherson <seanjc@google.com>
• COLD36d [PATCH v3 16/41] x86/vmware: Nullify save/restore hooks when using VMware's sched_clock
  2026-05-15 · Sean Christopherson <seanjc@google.com>
• COLD36d 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>
• DORMANTno replies [tip: x86/cpu] treewide: Explicitly include the x86 CPUID headers
  2026-05-06 · tip-bot2 for Ahmed S. Darwish <hidden>
• COLD50d [PATCH v6 04/90] treewide: Explicitly include the x86 CPUID headers
  2026-03-27 · "Ahmed S. Darwish" <darwi@linutronix.de>
• STALE99d [tip: x86/cleanups] x86/paravirt: Replace io_delay() hook with a bool
  2026-03-22 · tip-bot2 for Juergen Gross <hidden>
• STALE99d [tip: x86/cleanups] x86/paravirt: Replace io_delay() hook with a bool
  2026-03-21 · tip-bot2 for Juergen Gross <hidden>
• COLD45d [PATCH v2 4/4] x86/vmware: Support steal time clock for encrypted guests
  2026-03-10 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• COLD45d [PATCH v2 3/4] x86/vmware: Report guest crash to the hypervisor
  2026-03-10 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• COLD45d [PATCH v2 2/4] x86/vmware: Log kmsg dump on panic
  2026-03-10 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• COLD45d [PATCH v2 1/4] x86/vmware: Introduce common vmware_hypercall()
  2026-03-10 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• COLD45d [PATCH 4/4] x86/vmware: Support steal time clock for encrypted guests
  2026-03-07 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• COLD45d [PATCH 3/4] x86/vmware: Report guest crash to the hypervisor
  2026-03-07 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• COLD45d [PATCH 2/4] x86/vmware: Log kmsg dump on panic
  2026-03-07 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• COLD45d [PATCH 1/4] x86/vmware: Introduce common vmware_hypercall()
  2026-03-07 · Alexey Makhalov <alexey.makhalov@broadcom.com>
• STALE142d Re: Linux 6.18.10
  2026-02-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE142d Re: Linux 6.12.70
  2026-02-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE141d Re: [PATCH] x86/vmware: Fix hypercall clobbers
  2026-02-06 · Josh Poimboeuf <jpoimboe@kernel.org>

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.

• COLD36d 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
• COLD24d 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.

• STALE175d [PATCH v2 1/5] x86/paravirt: Replace io_delay() hook with a bool
  2025-12-16 · Juergen Gross <jgross@suse.com>
• STALE142d Re: Linux 6.12.70
  2026-02-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE142d Re: Linux 6.18.10
  2026-02-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE99d [tip: x86/cleanups] x86/paravirt: Replace io_delay() hook with a bool
  2026-03-21 · tip-bot2 for Juergen Gross <hidden>
• STALE99d [tip: x86/cleanups] x86/paravirt: Replace io_delay() hook with a bool
  2026-03-22 · tip-bot2 for Juergen Gross <hidden>
• COLD50d [PATCH v6 04/90] treewide: Explicitly include the x86 CPUID headers
  2026-03-27 · "Ahmed S. Darwish" <darwi@linutronix.de>
• DORMANTno replies [tip: x86/cpu] treewide: Explicitly include the x86 CPUID headers
  2026-05-06 · tip-bot2 for Ahmed S. Darwish <hidden>
• WARM3d [PATCH v7 001/120] treewide: Explicitly include the x86 CPUID headers
  2026-05-28 · "Ahmed S. Darwish" <darwi@linutronix.de>