Documentation/virtual/kvm/locking.txt

   1 KVM Lock Overview
   2 =================
   3
   4 1. Acquisition Orders
   5 ---------------------
   6
   7 (to be written)
   8
   9 2. Reference
  10 ------------
  11
  12 Name:           kvm_lock
  13 Type:           raw_spinlock
  14 Arch:           any
  15 Protects:       - vm_list
  16                 - hardware virtualization enable/disable
  17 Comment:        'raw' because hardware enabling/disabling must be atomic /wrt
  18                 migration.
  19
  20 Name:           kvm_arch::tsc_write_lock
  21 Type:           raw_spinlock
  22 Arch:           x86
  23 Protects:       - kvm_arch::{last_tsc_write,last_tsc_nsec,last_tsc_offset}
  24                 - tsc offset in vmcb
  25 Comment:        'raw' because updating the tsc offsets must not be preempted.