Change in ...coreboot[master]: soc/intel/denverton_ns: Enable Fast Strings

[David Guckian (Code Review)]

David Guckian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/25431 )

Change subject: soc/intel/denverton_ns: Enable Fast Strings
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Patch Set 7:

As per Intel Architecture SW Developers Manual:
Vol. 1, Section 7.3.9.3
Fast-String Operation
To improve performance, more recent processors support modifications to the processor’s operation during the string store operations initiated with the MOVS, MOVSB, STOS, and STOSB instructions. This optimized operation, called fast-string operation...

Software can disable fast-string operation by clearing the fast-string-enable bit (bit 0) of IA32_MISC_ENABLE MSR. However, Intel recommends that system software always enable fast-string operation.

It's a short paragraph, but a bit long to add all of it here I think.