[coreboot-gerrit] Change in coreboot[master]: security/intel/stm: Check for processor STM support

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Hello Patrick Rudolph, ron minnich, build bot (Jenkins), Nicolas Reinecke, Patrick Georgi, Martin Roth,

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

https://review.coreboot.org/c/coreboot/+/38836

to look at the new patch set (#4).

Change subject: security/intel/stm: Check for processor STM support
......................................................................

security/intel/stm: Check for processor STM support

Check to ensure that dual monitor mode is supported on the
current processor. Dual monitor mode is normally supported on
any Intel x86 processor that has VTx support.  The STM is
a hypervisor that executes in SMM dual monitor mode.  This
check should fail only in the rare case were dual monitor mode
is disabled.  If the check fails, then the STM will not
be initialized by coreboot.

Signed-off-by: Eugene D. Myers 
Change-Id: I518bb2aa1bdec94b5b6d5e991d7575257f3dc6e9
---
M src/include/cpu/x86/msr.h
M src/security/intel/stm/StmPlatformSmm.c
2 files changed, 12 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/36/38836/4