Sets the global interrupt flag.
The __svm_stgi function is equivalent to the STGI machine instruction. The global interrupt flag determines whether the microprocessor ignores, postpones, or handles interrupts due to events such as an I/O completion, a hardware temperature alert, or a debug exception.
This function supports the interaction of a host's virtual machine monitor with a guest operating system and its applications. For more information, search for the document, "AMD64 Architecture Programmer's Manual Volume 2: System Programming," document number 24593, revision 3.11, at the AMD corporation site.