[RFC,0/4] Support for out-of-tree hypervisor modules in i915/gvt

Message

Julian Stecklina Jan. 9, 2020, 5:13 p.m. UTC

These patch series removes the dependency of i915/gvt hypervisor
backends on the driver internals of the i915 driver. Instead, we add a
small public API that hypervisor backends can use.

This enables out-of-tree hypervisor backends for the Intel graphics
virtualization and simplifies development. At the same time, it
creates at least a bit of a barrier to including more i915 internals
into kvmgt, which is nice in itself.

The first two patches are pretty much general cleanup and could be
merged without the rest.

Any feedback is welcome.

Julian Stecklina (4):
  drm/i915/gvt: make gvt oblivious of kvmgt data structures
  drm/i915/gvt: remove unused vblank_done completion
  drm/i915/gvt: define a public interface to gvt
  drm/i915/gvt: move public gvt headers out into global include

 drivers/gpu/drm/i915/gvt/Makefile             |   2 +-
 drivers/gpu/drm/i915/gvt/debug.h              |   2 +-
 drivers/gpu/drm/i915/gvt/display.c            |  26 ++
 drivers/gpu/drm/i915/gvt/display.h            |  27 --
 drivers/gpu/drm/i915/gvt/gtt.h                |   2 -
 drivers/gpu/drm/i915/gvt/gvt.h                |  65 +--
 drivers/gpu/drm/i915/gvt/gvt_public.c         | 154 +++++++
 drivers/gpu/drm/i915/gvt/kvmgt.c              | 413 ++++++++++--------
 drivers/gpu/drm/i915/gvt/mpt.h                |   3 -
 drivers/gpu/drm/i915/gvt/reg.h                |   2 -
 include/drm/i915_gvt.h                        | 104 +++++
 .../drm/i915_gvt_hypercall.h                  |  13 +-
 12 files changed, 537 insertions(+), 276 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/gvt/gvt_public.c
 create mode 100644 include/drm/i915_gvt.h
 rename drivers/gpu/drm/i915/gvt/hypercall.h => include/drm/i915_gvt_hypercall.h (92%)