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>

diff --git a/Documentation/virt/kvm/locking.rst b/Documentation/virt/kvm/locking.rst
index 6c9aa4f..845a561 100644 (file)
--- 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