printk from x86-64 assembly code

[Valdis.Kletnieks at vt.edu]

On Thu, 18 Dec 2014 00:34:35 -0500, John de la Garza said:

> I wasn't sure how to make the call to jj_print so I just used the
> ALTERNATIVE_JUMP without trying to understand it,

That can't end well.

I respectfully suggest that if you can't figure out how to make a
call to a function in assembler, maybe you shouldn't play with it
in the kernel till you learn a bit more.

Might want to try writing some asm code for userspace till you get the
basics down....
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