From 69fa2d78653918d200220ca62d44715827e6d617 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Mon, 29 Jun 2009 22:24:07 +0300
Subject: [PATCH] KVM: document locking for kvm_io_device_ops

slots_lock is taken everywhere when device ops are called.
Document this as we will use this to rework locking for io.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
 virt/kvm/iodev.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/virt/kvm/iodev.h b/virt/kvm/iodev.h
index 2c67f5acd6db..06e38b23fa61 100644
--- a/virt/kvm/iodev.h
+++ b/virt/kvm/iodev.h
@@ -20,6 +20,9 @@
 
 struct kvm_io_device;
 
+/**
+ * kvm_io_device_ops are called under kvm slots_lock.
+ **/
 struct kvm_io_device_ops {
 	void (*read)(struct kvm_io_device *this,
 		     gpa_t addr,
-- 
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