Speculative instruction load control

Details Speculative instruction load control Speculative instruction load control

2008-07-29

2008-07-29

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C711S213000, C710S003000

Reexamination Certificate

active

10830717

ABSTRACT:
A method and system for validating speculative load operations. The system identifies speculative load operations that might be executed in a code sequence and after translating the virtual address of the speculative load to a physical address, a speculative load control unit is used to define a plurality of memory regions and has means for checking whether the physical addresses lie within at least one of said defined memory regions. In this way, the control unit allows the mapping of large physical page size to RAM devices and the extra address space is filtered off by the control unit so that speculative loads are not carried out in unknown regions.

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