KVM: s390: fix wait_queue handling
KVM: s390: fix wait_queue handling

There are two waitqueues in kvm for wait handling:
vcpu->wq for virt/kvm/kvm_main.c and
vpcu->arch.local_int.wq for the s390 specific wait code.

the wait handling in kvm_s390_handle_wait was broken by using different
wait_queues for add_wait queue and remove_wait_queue.

There are two options to fix the problem:
o  move all the s390 specific code to vcpu->wq and remove
   vcpu->arch.local_int.wq
o  move all the s390 specific code to vcpu->arch.local_int.wq

This patch chooses the 2nd variant for two reasons:
o  s390 does not use kvm_vcpu_block but implements its own enabled wait
   handling.
   Having a separate wait_queue make it clear, that our wait mechanism is
   different
o  the patch is much smaller

Report-by:  Julia Lawall <b43b0ad1e8108e7ab870d7a54feac93ae8b8600e@diku.dk>
Signed-off-by: Christian Borntraeger <49712f635b03c16d7f4c43df70e49ec8c565813d@de.ibm.com>
Signed-off-by: Marcelo Tosatti <958bcd1f4a7a8c36dca09fe3fa9cb5f1483adf51@redhat.com>
Signed-off-by: Avi Kivity <8f920f22884d6fea9df883843c4a8095a2e5ac6f@redhat.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas