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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-19 19:21:29 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-19 19:21:29 +0300 |
| commit | 45d36906e256fe9f8e976461b4c559722c3cbe2a (patch) | |
| tree | 649e00cec719720c378fd518f84a53d299a357e7 /Documentation | |
| parent | f1e9132444a97b52b20d07f352323926b2df7c32 (diff) | |
| parent | ef85b67385436ddc1998f45f1d6a210f935b3388 (diff) | |
| download | linux-45d36906e256fe9f8e976461b4c559722c3cbe2a.tar.xz | |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Early fixes for x86.
Instead of the (botched) revert, the lockdep/might_sleep splat has a
real fix provided by Andrea"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: nVMX: Allow L1 to intercept software exceptions (#BP and #OF)
kvm: take srcu lock around kvm_steal_time_set_preempted()
kvm: fix schedule in atomic in kvm_steal_time_set_preempted()
KVM: hyperv: fix locking of struct kvm_hv fields
KVM: x86: Expose Intel AVX512IFMA/AVX512VBMI/SHA features to guest.
kvm: nVMX: Correct a VMX instruction error code for VMPTRLD
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virtual/kvm/locking.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/virtual/kvm/locking.txt b/Documentation/virtual/kvm/locking.txt index e5dd9f4d6100..fd013bf4115b 100644 --- a/Documentation/virtual/kvm/locking.txt +++ b/Documentation/virtual/kvm/locking.txt @@ -13,8 +13,12 @@ The acquisition orders for mutexes are as follows: - kvm->slots_lock is taken outside kvm->irq_lock, though acquiring them together is quite rare. -For spinlocks, kvm_lock is taken outside kvm->mmu_lock. Everything -else is a leaf: no other lock is taken inside the critical sections. +On x86, vcpu->mutex is taken outside kvm->arch.hyperv.hv_lock. + +For spinlocks, kvm_lock is taken outside kvm->mmu_lock. + +Everything else is a leaf: no other lock is taken inside the critical +sections. 2: Exception ------------ |