tree 9823a76657f257d71aac2a5f4374c56560dd2e6e
parent d70ac829b7f42d7ef4f879635c6a772b0b4ed0a2
author Ivan Kokshaysky <ink@jurassic.park.msu.ru> 1214004339 +0400
committer Linus Torvalds <torvalds@linux-foundation.org> 1214005570 -0700

alpha: fix module load failures on smp (bug #10926)

To calculate addresses of locally defined variables, GCC uses 32-bit
displacement from the GP. Which doesn't work for per cpu variables in
modules, as an offset to the kernel per cpu area is way above 4G.

The workaround is to force allocation of a GOT entry for per cpu variable
using ldq instruction with a 'literal' relocation.
I had to use custom asm/percpu.h, as a required argument magic doesn't
work with asm-generic/percpu.h macros.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>