On Mon, Sep 8, 2025 at 11:12 PM Ryosuke Yasuoka <ryasu...@redhat.com> wrote: > > 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 >
This is the history of this patch. v1: https://lore.kernel.org/all/20250901083701.32365-1-ryasu...@redhat.com/ v2: - Map a scanout_buffer to VRAM in .get_scanout_buffer - And then write to VRAM directly using fifo in legacy mode to avoid allocations or command submissions. Regards, Ryosuke
