linux-xiaomi-chiron/drivers/gpu/drm
Hugh Dickins cdc1e6e225 drm/i915: fix blank screen booting crashes
5.15-rc1 crashes with blank screen when booting up on two ThinkPads
using i915.  Bisections converge convincingly, but arrive at different
and suprising "culprits", none of them the actual culprit.

netconsole (with init_netconsole() hacked to call i915_init() when
logging has started, instead of by module_init()) tells the story:

kernel BUG at drivers/gpu/drm/i915/i915_sw_fence.c:245!
with RSI: ffffffff814d408b pointing to sw_fence_dummy_notify().
I've been building with CONFIG_CC_OPTIMIZE_FOR_SIZE=y, and that
function needs to be 4-byte aligned.

Fixes: 62eaf0ae21 ("drm/i915/guc: Support request cancellation")
Signed-off-by: Hugh Dickins <hughd@google.com>
Tested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-10-02 09:39:15 -07:00
..
amd drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix 2021-09-28 14:40:27 -04:00
arm
armada
aspeed
ast
atmel-hlcdc
bridge
etnaviv
exynos
fsl-dcu
gma500
gud
hisilicon
hyperv
i2c
i810
i915 drm/i915: fix blank screen booting crashes 2021-10-02 09:39:15 -07:00
imx
ingenic
kmb
lib
lima
mcde
mediatek
meson
mga
mgag200
msm
mxsfb
nouveau
omapdrm
panel
panfrost
pl111
qxl
r128
radeon
rcar-du
rockchip
savage
scheduler
selftests
shmobile
sis
sti
stm
sun4i
tdfx
tegra
tidss
tilcdc
tiny
ttm
tve200
udl
v3d
vboxvideo
vc4
vgem
via
virtio
vkms
vmwgfx
xen
xlnx
zte
drm_agpsupport.c
drm_aperture.c
drm_atomic.c
drm_atomic_helper.c
drm_atomic_state_helper.c
drm_atomic_uapi.c
drm_auth.c
drm_blend.c
drm_bridge.c
drm_bridge_connector.c
drm_bufs.c
drm_cache.c
drm_client.c
drm_client_modeset.c
drm_color_mgmt.c
drm_connector.c
drm_context.c
drm_crtc.c
drm_crtc_helper.c
drm_crtc_helper_internal.h
drm_crtc_internal.h
drm_damage_helper.c
drm_debugfs.c
drm_debugfs_crc.c
drm_displayid.c
drm_dma.c
drm_dp_aux_bus.c
drm_dp_aux_dev.c
drm_dp_cec.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c
drm_dp_mst_topology.c
drm_dp_mst_topology_internal.h
drm_drv.c
drm_dsc.c
drm_dumb_buffers.c
drm_edid.c
drm_edid_load.c
drm_encoder.c
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c
drm_file.c
drm_flip_work.c
drm_format_helper.c
drm_fourcc.c
drm_framebuffer.c
drm_gem.c
drm_gem_atomic_helper.c
drm_gem_cma_helper.c
drm_gem_framebuffer_helper.c
drm_gem_shmem_helper.c
drm_gem_ttm_helper.c
drm_gem_vram_helper.c
drm_hashtab.c
drm_hdcp.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c
drm_irq.c
drm_kms_helper_common.c
drm_lease.c
drm_legacy.h
drm_legacy_misc.c
drm_lock.c
drm_managed.c
drm_memory.c
drm_mipi_dbi.c
drm_mipi_dsi.c
drm_mm.c
drm_mode_config.c
drm_mode_object.c
drm_modes.c
drm_modeset_helper.c
drm_modeset_lock.c
drm_of.c
drm_panel.c
drm_panel_orientation_quirks.c
drm_pci.c
drm_plane.c
drm_plane_helper.c
drm_prime.c
drm_print.c
drm_probe_helper.c
drm_property.c
drm_rect.c
drm_scatter.c
drm_scdc_helper.c
drm_self_refresh_helper.c
drm_simple_kms_helper.c
drm_syncobj.c
drm_sysfs.c
drm_trace.h
drm_trace_points.c
drm_vblank.c
drm_vblank_work.c
drm_vm.c
drm_vma_manager.c
drm_writeback.c
Kconfig
Makefile