Hi, On Fri, Jan 05, 2018 at 09:19:30PM +0100, David Reviejo wrote: > 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"...).
There is indeed https://git.kernel.org/linus/ce4a4e565f5264909a18c733b864c3f74467f69e backported as 3e5daacf65173987436bad6ab9039a05f9545cdd in v4.9.74 which AFAICS did remove the surrounding directives. Regards, Salvatore
