Bug#886417: linux-source-4.9: Kernel sources do not compile

[David Reviejo <dreviejo@gmail.com>]

Hi,

I have the same error with a very old machine, a Pentium-M one, (and so
no SMP...) trying to compile the source from 4.9.65-3+deb9u2 with a
custom config.

The problem is: the "load_new_mm_cr3" function in arch/x86/mm/tlb.c is
compiled only when SMP config is defined, but is used in code compiled
for no SMP machines (line 160); because of this the
"implicit-function-declaration" error.

Trying your sugestion, upstream 4.9.75 compile without problems: the
tlb.c there has no SMP special code (the header says something about:
"formerly SMP-only"...).

Cheers,
-- 
David