[PATCH drm-misc-next v2 0/1] add drm_panic_support for vmwgfx-stdu

[Ryosuke Yasuoka <ryasuoka@redhat.com>]

Add drm_panic support for stdu in vmwgfx. This patch was tested in 
a VM with VMSVGA on Virtual Box.

I got 2 type of suggestions from reviewers:
1. Write the panic screen to guest_memory_bo and send dirty/flush
command
2. Write it to VRAM directly and then switch back to legacy mode

Since option 2 is simpler than another one and ldu might be able
to re-use some codes if ldu supports drm_panic, I re-write this
v2 patch with option 2.

Ryosuke Yasuoka (1):
  drm/vmwgfx: add drm_panic support for stdu

 drivers/gpu/drm/vmwgfx/vmwgfx_cmd.c  | 73 ++++++++++++++++++++++++++++
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h  | 18 +++++++
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c  |  9 ++++
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h  |  1 +
 drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c  | 43 ++++++++++++++++
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c | 34 +++++++++++++
 6 files changed, 178 insertions(+)


base-commit: 306c8959b5fdfdc3900aebe4e56257a349f5765f
-- 
2.51.0