[PATCH RFC drm-next 0/1] Add support for drm_panic

[Ryosuke Yasuoka <ryasuoka@redhat.com>]

This patch adds drm_panic support for hyperv-drm driver. This function
works but it's still needed to brush up. Let me hear your opinions.

Once kernel panic occurs we expect to see a panic screen. However, to
see the screen, I need to close/re-open the graphic console client
window. As the panic screen shows correctly in the small preview
window in Hyper-V manager and debugfs API for drm_panic works correctly,
I think kernel needs to send signal to Hyper-V host that the console
client refreshes, but I have no idea what kind of signal is needed.

This patch is tested on Hyper-V 2022.

Ryosuke Yasuoka (1):
  drm/hyperv: Add support for drm_panic

 drivers/gpu/drm/drm_simple_kms_helper.c     | 26 +++++++++++++
 drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 42 +++++++++++++++++++++
 include/drm/drm_simple_kms_helper.h         | 22 +++++++++++
 3 files changed, 90 insertions(+)


base-commit: cf05922d63e2ae6a9b1b52ff5236a44c3b29f78c
-- 
2.48.1