korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 12:28:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

Documentation: kvm: include new locks

Browse Source 
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>
This commit is contained in:
Paolo Bonzini 2022-03-22 12:07:20 +01:00
parent e9611bf9d2
commit 99a17b7770
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Documentation/virt/kvm/locking.rst
View File

@ -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