diff options
| author | Junaid Shahid <junaids@google.com> | 2019-01-03 17:14:28 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-06-05 14:14:50 +0200 |
| commit | 0d9ce162cf46c99628cc5da9510b959c7976735b (patch) | |
| tree | cb7670bedf8c614aa20313b95456f942fd16b6d4 /Documentation/virtual | |
| parent | 1ae4de23eddef465104277e79fa669bec7b3d288 (diff) | |
| download | lwn-0d9ce162cf46c99628cc5da9510b959c7976735b.tar.gz lwn-0d9ce162cf46c99628cc5da9510b959c7976735b.zip | |
kvm: Convert kvm_lock to a mutex
It doesn't seem as if there is any particular need for kvm_lock to be a
spinlock, so convert the lock to a mutex so that sleepable functions (in
particular cond_resched()) can be called while holding it.
Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virtual')
| -rw-r--r-- | Documentation/virtual/kvm/locking.txt | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/virtual/kvm/locking.txt b/Documentation/virtual/kvm/locking.txt index 1bb8bcaf8497..635cd6eaf714 100644 --- a/Documentation/virtual/kvm/locking.txt +++ b/Documentation/virtual/kvm/locking.txt @@ -15,8 +15,6 @@ The acquisition orders for mutexes are as follows: 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. @@ -169,7 +167,7 @@ which time it will be set using the Dirty tracking mechanism described above. ------------ Name: kvm_lock -Type: spinlock_t +Type: mutex Arch: any Protects: - vm_list |