[S] Change in coreboot[main]: cpu/intel/car/romstage: Fix false-positive stack corruption

[Patrick Rudolph (Code Review)]

Attention is currently required from: Christian Walter, Jincheng Li, Jérémy Compostella, Patrick Rudolph, Shuo Liu, Subrata Banik, Uwe Poeche, [e-mail].

Hello Christian Walter, Jincheng Li, Jérémy Compostella, Shuo Liu, Subrata Banik, Uwe Poeche, build bot (Jenkins), siemens-bot, [e-mail],

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

https://review.coreboot.org/c/coreboot/+/85568?usp=email

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

The following approvals got outdated and were removed:
Code-Review+1 by Jérémy Compostella, Code-Review+1 by Uwe Poeche, Code-Review+2 by Christian Walter, Code-Review+2 by Shuo Liu, Verified+1 by build bot (Jenkins), Verified+1 by siemens-bot

The change is no longer submittable: Code-Review and Verified are unsatisfied now.

Change subject: cpu/intel/car/romstage: Fix false-positive stack corruption
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cpu/intel/car/romstage: Fix false-positive stack corruption

Fix regression introduced in commit 03518727313119a8c7a273eb745663c99f8e4d22
("arch/x86: Add breakpoint to stack canary").

romstage_main writes to the stack-canary, but since that's expected
temporarily disable the breakpoint. This only caused a warning on
platforms that do select IDT_IN_EVERY_STAGE, since those install the
stack canary breakpoint.

TEST: No more exceptions are printed in romstage when IDT_IN_EVERY_STAGE
      is enabled.

Change-Id: I7ebf0a5e8eaad49af77ab4d5f6b58fc849013b14
Signed-off-by: Patrick Rudolph 
---
M src/cpu/intel/car/romstage.c
1 file changed, 18 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/68/85568/2