kernel virtual machine (kvm) · Supported

Maintainers

• M Paolo Bonzini <pbonzini@redhat.com>

Paths

• F Documentation/virt/kvm/
• F include/asm-generic/kvm*
• F include/kvm/iodev.h
• F include/linux/kvm*
• F include/trace/events/kvm.h
• F include/uapi/asm-generic/kvm*
• F include/uapi/linux/kvm*
• F tools/kvm/
• F tools/testing/selftests/kvm/
• F virt/kvm/*

Last 30 days

Active reviewers (last 30 days)

• Sean Christopherson <seanjc@google.com>
  10 attestations (9 Co-developed-by, 1 Suggested-by) · last on 2026-06-19
• Fuad Tabba <hidden>
  3 attestations (3 Reviewed-by) · last on 2026-06-19
• Ackerley Tng <hidden>
  2 attestations (2 Co-developed-by) · last on 2026-06-19
• Michael Roth <hidden>
  1 attestation (1 Suggested-by) · last on 2026-06-19
• Binbin Wu <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-06-16
• Ira Weiny <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-06-16

Recent patches

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

• WARM2d [PATCH v5 20/51] KVM: x86: Officially define CPUID 0x40000010 as PV Timing Info (TSC and Bus)
  2026-07-01 · Sean Christopherson <seanjc@google.com>
• WARM3d [PATCH v8 38/46] KVM: selftests: Add helpers to pin pages with CONFIG_GUP_TEST
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 40/46] KVM: selftests: Reset shared memory after hole-punching
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 39/46] KVM: selftests: Test conversion with elevated page refcount
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 43/46] KVM: selftests: Check fd/flags provided to mmap() when setting up memslot
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 41/46] KVM: selftests: Provide function to look up guest_memfd details from gpa
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 42/46] KVM: selftests: Provide common function to set memory attributes
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 46/46] KVM: selftests: Update private memory exits test to work with per-gmem attributes
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 44/46] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 45/46] KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 30/46] KVM: selftests: Add helpers for calling ioctls on guest_memfd
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 32/46] KVM: selftests: Test conversion flow when INIT_SHARED
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 34/46] KVM: selftests: Test conversion before allocation
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 33/46] KVM: selftests: Test conversion precision in guest_memfd
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 31/46] KVM: selftests: Test basic single-page conversion flow
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 35/46] KVM: selftests: Convert with allocated folios in different layouts
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 36/46] KVM: selftests: Test that truncation does not change shared/private status
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 37/46] KVM: selftests: Test that shared/private status is consistent across processes
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 23/46] KVM: TDX: Make source page optional for KVM_TDX_INIT_MEM_REGION
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 22/46] KVM: SEV: Make 'uaddr' parameter optional for KVM_SEV_SNP_LAUNCH_UPDATE
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 28/46] KVM: selftests: Add support for mmap() on guest_memfd in core library
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d REVIEWED: 1 (0M) [PATCH v8 27/46] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset}
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d REVIEWED: 1 (0M) [PATCH v8 26/46] KVM: selftests: Create gmem fd before "regular" fd when adding memslot
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 29/46] KVM: selftests: Add selftests global for guest memory attributes capability
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d [PATCH v8 17/46] KVM: guest_memfd: Advertise KVM_SET_MEMORY_ATTRIBUTES2 ioctl
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• WARM3d REVIEWED: 1 (0M) [PATCH v8 02/46] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-06-19 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• HOTtoday [PATCH v2 16/17] KVM: TDX: Add in-kernel Quote generation
  2026-06-18 · Xu Yilun <hidden>
• COOLING9d REVIEWED: 2 (0M) Re: [PATCH v13 01/22] KVM: selftests: Add macros to simplify creating VM shapes for non-default types
  2026-06-16 · Sean Christopherson <seanjc@google.com>
• COLD23d [PATCH RFC 3/3] KVM: selftests: exercise guest_memfd folio migration
  2026-06-11 · Shivank Garg <hidden>
• COLD15d [POC] KVM: selftests: Verify conversion works with TDX
  2026-06-05 · Ackerley Tng <hidden>

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.

• STALE156d REVIEWED: 2 (0M) [PATCH v7 2/2] KVM: SEV: Add KVM_SEV_SNP_ENABLE_REQ_CERTS command
  2026-01-09 · Michael Roth <hidden> · 1 Reviewed-by, 1 Tested-by
• COLD41d REVIEWED: 1 (0M) [PATCH v4 1/2] KVM: TDX: Allow userspace to return errors to guest for MAPGPA
  2026-03-05 · Sagi Shahar <hidden> · 1 Reviewed-by
• COOLING9d REVIEWED: 2 (0M) [PATCH v13 01/22] KVM: selftests: Add macros to simplify creating VM shapes for non-default types
  2026-05-21 · Lisa Wang <hidden> · 2 Reviewed-by
• COOLING9d REVIEWED: 2 (0M) [PATCH v13 02/22] KVM: selftests: Update kvm_init_vm_address_properties() for TDX
  2026-05-21 · Lisa Wang <hidden> · 2 Reviewed-by
• COOLING9d REVIEWED: 2 (0M) [PATCH v13 04/22] KVM: selftests: TDX: Use KVM_TDX_CAPABILITIES to validate TDs' attribute configuration
  2026-05-21 · Lisa Wang <hidden> · 2 Reviewed-by
• COOLING9d REVIEWED: 2 (0M) [PATCH v13 05/22] KVM: selftests: Expose segment definitions to assembly files
  2026-05-21 · Lisa Wang <hidden> · 2 Reviewed-by
• COOLING9d REVIEWED: 1 (0M) [PATCH v13 07/22] KVM: selftests: Introduce structures for TDX guest boot parameters
  2026-05-21 · Lisa Wang <hidden> · 1 Reviewed-by
• COOLING9d REVIEWED: 2 (0M) [PATCH v13 09/22] KVM: selftests: Expose functions to get default sregs values
  2026-05-21 · Lisa Wang <hidden> · 2 Reviewed-by
• COOLING9d REVIEWED: 2 (0M) [PATCH v13 18/22] KVM: selftests: Add helpers to init TDX memory and finalize VM
  2026-05-21 · Lisa Wang <hidden> · 2 Reviewed-by
• COLD15d REVIEWED: 1 (0M) [PATCH v7 02/42] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-05-23 · Ackerley Tng <hidden> · 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.

• STALE120d [RFC PATCH v3 08/12] coco: host: KVM: arm64: Handle vdev request exits and completion
  2026-03-12 · "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
• STALE80d [PATCH v13 11/48] arm64: RMI: Define the user ABI
  2026-03-18 · Steven Price <steven.price@arm.com>
• STALE74d [RFC PATCH v4 13/16] coco: host: KVM: arm64: Handle vdev validate-mapping exits
  2026-04-27 · "Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>
• COLD58d [PATCH RFC v5 02/53] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
  2026-04-28 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COLD58d [PATCH RFC v5 25/53] KVM: TDX: Make source page optional for KVM_TDX_INIT_MEM_REGION
  2026-04-28 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COLD58d [PATCH RFC v5 28/53] KVM: Add CAP to enumerate supported SET_MEMORY_ATTRIBUTES2 flags
  2026-04-28 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COLD58d [PATCH RFC v5 30/53] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset}
  2026-04-28 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COLD58d [PATCH RFC v5 29/53] KVM: selftests: Create gmem fd before "regular" fd when adding memslot
  2026-04-28 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COLD58d [PATCH RFC v5 31/53] KVM: selftests: Add support for mmap() on guest_memfd in core library
  2026-04-28 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
• COLD58d [PATCH RFC v5 33/53] KVM: selftests: Add helpers for calling ioctls on guest_memfd
  2026-04-28 · Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>