tree 8aff59c0397f9231f5889d21b682a7a76e7dc66d
parent 15096ffceabb9693306982127348890886384aaa
author Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> 1288602224 +0800
committer Avi Kivity <avi@redhat.com> 1294824543 +0200

KVM: fix the race while wakeup all pv guest

In kvm_async_pf_wakeup_all(), we add a dummy apf to vcpu->async_pf.done
without holding vcpu->async_pf.lock, it will break if we are handling apfs
at this time.

Also use 'list_empty_careful()' instead of 'list_empty()'

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Acked-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>