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
