[Nouveau] [Bug 72943] [NV98] hangs in nvbios_init on probe (worked in 3.2)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72943

--- Comment #15 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Well, I downloaded

https://www.dropbox.com/sh/e77p700zr8g1v4z/kb_av1ZSS6/127.0.0.1-2014.01.07-20%3A43%3A35

Which includes

kernel-debuginfo-common-x86_64-3.13.0-0.rc6.git0.1.fc20.x86_64.rpm

Which contains the source. I can only assume that this is the source that you
built from. And the drivers/gpu/drm/nouveau/core/subdev/bios/init.c in there
does not appear to have the patch applied to init_jump.

So I'd like to ask again... can you check that the kernel you're booting is the
kernel that has the patch applied to it? Am I misunderstanding the situation?
You could prove it to yourself by modifying some common print, for example,
that you would be able to identify from kernel messages. Or you could just
build the kernel directly without fancy tools that obscure these things.

(I did try loading the nouveau.ko.debug in gdb, but I think it _only_ contains
the debug symbols, since the init_jump function was full of add    %al,(%rax)
instructions which I think is just opcode 0.)

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