summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorJunaid Shahid <junaids@google.com>2019-01-04 04:14:28 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-11-12 21:19:05 +0300
commit05fe997e30d439e3ff0c7e7e46499e9d41d98ba7 (patch)
tree196c4cd7e0733c97f2e3be15eb7b33d9f4e47897 /Documentation
parent82e77746f07db70367f66ef272256037d6415353 (diff)
downloadlinux-05fe997e30d439e3ff0c7e7e46499e9d41d98ba7.tar.xz
kvm: Convert kvm_lock to a mutex
commit 0d9ce162cf46c99628cc5da9510b959c7976735b upstream. 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> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/virtual/kvm/locking.txt4
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