[M] Change in coreboot[master]: cpu/x86: Set thread local storage in C code

[Arthur Heymans (Code Review)]

Attention is currently required from: Raul Rangel, Arthur Heymans.

Hello build bot (Jenkins), Raul Rangel,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/69435

to look at the new patch set (#5).

Change subject: cpu/x86: Set thread local storage in C code
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cpu/x86: Set thread local storage in C code

Doing this in C code is way easier to understand. Also the thread local
storage is now in .bss instead of the AP stack. This makes it more
robust against stack overflows, as APs stacks overflow in each other.

TESTED: work on qemu.

Change-Id: I19d3285daf97798a2d28408b5601ad991e29e718
Signed-off-by: Arthur Heymans 
---
M src/arch/x86/c_start.S
M src/arch/x86/cpu.c
M src/arch/x86/include/arch/cpu.h
D src/cpu/x86/cpu_info.S.inc
M src/cpu/x86/mp_init.c
M src/cpu/x86/sipi_vector.S
6 files changed, 71 insertions(+), 110 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/35/69435/5