linux/drivers/gpu
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
..
drm drm/i915: fix blank screen booting crashes 2021-10-02 09:39:15 -07:00
host1x gpu: host1x: Plug potential memory leak 2021-09-16 18:06:52 +02:00
ipu-v3 Updates to the interrupt core and driver subsystems: 2021-08-30 14:38:37 -07:00
trace
vga vgaarb: don't pass a cookie to vga_client_register 2021-07-21 10:29:10 +02:00
Makefile