linux-kernel - [GIT PULL] KVM: Generic changes for 6.20

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Message-ID: <20260207041011.913471-3-seanjc@google.com>
Date: Fri,  6 Feb 2026 20:10:04 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Sean Christopherson <seanjc@...gle.com>
Subject: [GIT PULL] KVM: Generic changes for 6.20

Fix -Wflex-array-member-not-at-end warnings and document that vcpu->mutex is
taken outside of kvm->slots_lock.

The following changes since commit 9ace4753a5202b02191d54e9fdf7f9e3d02b85eb:

  Linux 6.19-rc4 (2026-01-04 14:41:55 -0800)

are available in the Git repository at:

  https://github.com/kvm-x86/linux.git tags/kvm-x86-generic-6.20

for you to fetch changes up to 98333091750d0288b1c64c47afe1950dbda1afe6:

  Documentation: KVM: Formalizing taking vcpu->mutex *outside* of kvm->slots_lock (2026-01-08 11:00:35 -0800)

----------------------------------------------------------------
KVM generic changes for 6.20

 - Remove a subtle pseudo-overlay of kvm_stats_desc, which, aside from being
   unnecessary and confusing, triggered compiler warnings due to
   -Wflex-array-member-not-at-end.

 - Document that vcpu->mutex is take outside of kvm->slots_lock, which is all
   kinds of unintuitive, but is unfortunately the existing behavior for
   multiple architectures, and in a weird way actually makes sense.

----------------------------------------------------------------
Sean Christopherson (2):
      KVM: Remove subtle "struct kvm_stats_desc" pseudo-overlay
      Documentation: KVM: Formalizing taking vcpu->mutex *outside* of kvm->slots_lock

 Documentation/virt/kvm/locking.rst |  2 +
 arch/arm64/kvm/guest.c             |  4 +-
 arch/loongarch/kvm/vcpu.c          |  2 +-
 arch/loongarch/kvm/vm.c            |  2 +-
 arch/mips/kvm/mips.c               |  4 +-
 arch/powerpc/kvm/book3s.c          |  4 +-
 arch/powerpc/kvm/booke.c           |  4 +-
 arch/riscv/kvm/vcpu.c              |  2 +-
 arch/riscv/kvm/vm.c                |  2 +-
 arch/s390/kvm/kvm-s390.c           |  4 +-
 arch/x86/kvm/x86.c                 |  4 +-
 include/linux/kvm_host.h           | 83 ++++++++++++++++----------------------
 include/uapi/linux/kvm.h           |  8 ++++
 virt/kvm/binary_stats.c            |  2 +-
 virt/kvm/kvm_main.c                | 20 ++++-----
 15 files changed, 72 insertions(+), 75 deletions(-)