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| author | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-22 12:07:20 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-29 19:21:19 +0200 |
| commit | 99a17b77704a44a89ec22509d73b1727763f2930 (patch) | |
| tree | 22dcd4fa2d58632912acabd742a255e5edf7269f /Documentation | |
| parent | Documentation: kvm: fixes for locking.rst (diff) | |
| download | linux-99a17b77704a44a89ec22509d73b1727763f2930.tar.xz linux-99a17b77704a44a89ec22509d73b1727763f2930.zip | |
Documentation: kvm: include new locks
kvm->mn_invalidate_lock and kvm->slots_arch_lock were not included in the
documentation, add them.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220322110720.222499-3-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virt/kvm/locking.rst | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/locking.rst b/Documentation/virt/kvm/locking.rst index 6c9aa4f49608..845a561629f1 100644 --- a/Documentation/virt/kvm/locking.rst +++ b/Documentation/virt/kvm/locking.rst @@ -226,6 +226,12 @@ time it will be set using the Dirty tracking mechanism described above. :Comment: 'raw' because hardware enabling/disabling must be atomic /wrt migration. +``kvm->mn_invalidate_lock`` +^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +:Type: spinlock_t +:Arch: any +:Protects: mn_active_invalidate_count, mn_memslots_update_rcuwait ``kvm_arch::tsc_write_lock`` ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -255,6 +261,15 @@ time it will be set using the Dirty tracking mechanism described above. The srcu index can be stored in kvm_vcpu->srcu_idx per vcpu if it is needed by multiple functions. +``kvm->slots_arch_lock`` +^^^^^^^^^^^^^^^^^^^^^^^^ +:Type: mutex +:Arch: any (only needed on x86 though) +:Protects: any arch-specific fields of memslots that have to be modified + in a ``kvm->srcu`` read-side critical section. +:Comment: must be held before reading the pointer to the current memslots, + until after all changes to the memslots are complete + ``wakeup_vcpus_on_cpu_lock`` ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ :Type: spinlock_t |