On 22/11/2018 17:54, Cornelia Huck wrote:
Allow to extend the regions used by vfio-ccw. The first user will be handling of halt and clear subchannel. Signed-off-by: Cornelia Huck <cohuck@xxxxxxxxxx> --- drivers/s390/cio/vfio_ccw_ops.c | 182 ++++++++++++++++++++++++---- drivers/s390/cio/vfio_ccw_private.h | 38 ++++++ include/uapi/linux/vfio.h | 1 + 3 files changed, 195 insertions(+), 26 deletions(-)
Halt and clear have no parameters (the sub-channel ID is obviously the one of the mediated device).
Isn't adding a new sub-region for the purpose of handling halt and clear superfluous?
What is the reason not to use simple ioctls ? Regards, Pierre -- Pierre Morel Linux/KVM/QEMU in Böblingen - Germany
