[coreboot-gerrit] Change in coreboot[master]: cpu/x86/smm/smm_stub: Fix stack canary on x86_64

[Patrick Rudolph (Code Review)]

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/48215 )

Change subject: cpu/x86/smm/smm_stub: Fix stack canary on x86_64
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Patch Set 1:

(1 comment)

https://review.coreboot.org/c/coreboot/+/48215/1/src/cpu/x86/smm/smm_stub.S 
File src/cpu/x86/smm/smm_stub.S:

https://review.coreboot.org/c/coreboot/+/48215/1/src/cpu/x86/smm/smm_stub.S@... 
PS1, Line 146: movl	%ebx, (%ebx)
             : #if ENV_X86_64
             : 	movl	$0, 4(%ebx)
             : #endif
> maybe movq $rbx, (%rbx) is clearer?

That can't be used as this code is still in protected mode.