Commit 99a17b77 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

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: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220322110720.222499-3-pbonzini@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent e9611bf9

Documentation/virt/kvm/locking.rst

+15 −0
Original line number Diff line number Diff line
@@ -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