[PATCH 4.12 122/196] drm/i915/gvt: Fix inconsistent locks holding sequence

4.12-stable review patch. If anyone has any objections, please let me know. -- From: Chuanxiao Dong commit f16bd3dda2c8bf6699e808cd9cc540cfab10e60e upstream. There are two kinds of locking sequence. One is in the thread which is started by vfio

[PATCH 4.12 122/196] drm/i915/gvt: Fix inconsistent locks holding sequence

4.12-stable review patch. If anyone has any objections, please let me know. -- From: Chuanxiao Dong commit f16bd3dda2c8bf6699e808cd9cc540cfab10e60e upstream. There are two kinds of locking sequence. One is in the thread which is started by vfio ioctl to do the iommu