[coreboot-gerrit] [M] Change in coreboot[main]: cpu/x86/smm: Set up page tables in safe SMRAM

[Arthur Heymans (Code Review)]

Attention is currently required from: Jérémy Compostella.

Hello Jérémy Compostella,

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

https://review.coreboot.org/c/coreboot/+/80336?usp=email

to look at the new patch set (#2).

Change subject: cpu/x86/smm: Set up page tables in safe SMRAM
......................................................................

cpu/x86/smm: Set up page tables in safe SMRAM

Relying on page tables being in RO flash is not safe in every setup,
therefore set up some page tables in SMRAM that the permanent smihandler
can use.

Tested on QEMU.

Signed-off-by: Arthur Heymans 
Change-Id: Icb3086abd577b9abb9966dd910a264a873ace4ed
---
M src/cpu/x86/mp_init.c
M src/cpu/x86/smm/smm_module_loader.c
2 files changed, 54 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/36/80336/2