Abstract:
In an embodiment, a processor includes processing cores to execute instructions; and throttling logic. The throttling logic is to: determine an average capacitance score for execution events in a sliding window; perform frequency throttling when the average capacitance score exceeds a throttling threshold; determine a count of frequency throttling instances; and in response to a determination that the count of frequency throttling instances exceeds a maximum throttling value, increase the throttling threshold and concurrently reduce a baseline frequency. Other embodiments are described and claimed.
Abstract:
An apparatus and method for tagged memory management, an embodiment including execution circuitry to generate a system memory access request having a first address pointer and address translation circuitry to determine whether to translate the first address pointer with metadata processing. The address translation circuitry is to access address translation tables to translate the first address pointer to a first physical address, perform a lookup in a memory metadata table to identify a memory metadata value associated with a physical address range including the first physical address, determine a pointer metadata value associated with the first address pointer, and compare the memory metadata value with the pointer metadata value; and when the comparison results in a validation of the memory access request, then return the first physical address.
Abstract:
Systems, methods, and apparatuses relating to linear address masking architecture are described. In one embodiment, a hardware processor includes an address generation unit to generate a linear address for a memory access request to a memory, at least one control register comprising a user mode masking bit and a supervisor mode masking bit, a register comprising a current privilege level indication, and a memory management unit to mask out a proper subset of bits inside an address space of the linear address for the memory access request based on the current privilege level indication and either of the user mode masking bit or the supervisor mode masking bit to produce a resultant linear address, and output the resultant linear address.
Abstract:
In an embodiment, a processor includes processing cores to execute instructions; and throttling logic. The throttling logic is to: determine an average capacitance score for execution events in a sliding window; perform frequency throttling when the average capacitance score exceeds a throttling threshold; determine a count of frequency throttling instances; and in response to a determination that the count of frequency throttling instances exceeds a maximum throttling value, increase the throttling threshold and concurrently reduce a baseline frequency. Other embodiments are described and claimed.
Abstract:
A processor includes a core, a memory subsystem, a predictor module, and a memory rename module. The predictor module may include a first logic to identify a dependency between a store instruction and a load instruction, and a second logic to assign a memory renaming (MRN) register to the store instruction and the load instruction based on the identified dependency. Further, the memory rename module may include a third logic to copy, based on the assigned MRN register, information in a first logical register associated with the store instruction directly to a second logical register associated with the load instruction.
Abstract:
A processor and method are described for alias detection. For example, one embodiment of an apparatus comprises: reordering logic to receive a set of read and write operations in a program order and to responsively reorder the read and write operations; adjustment information attachment logic to associate adjustment information with one or more of the set of read and write operations, wherein for a read operation the adjustment information is to indicate a number of write operations which the read operation has bypassed and for a write operation the adjustment information is to indicate a number of read operations which have bypassed the write operation; and out-of-order processing logic to determine whether execution of the reordered read and write operations will result in a conflict based, at least in part, on the adjustment information associated with the one or more reads and writes.
Abstract:
In an embodiment, a processor includes at least a first core. The first core includes execution logic to execute operations, and a first event counter to determine a first event count associated with events of a first type that have occurred since a start of a first defined interval. The first core also includes a second event counter to determine a second event count associated with events of a second type that have occurred since the start of the first defined interval, and stall logic to stall execution of operations including at least first operations associated with events of the first type, until the first defined interval is expired responsive to the first event count exceeding a first combination threshold concurrently with the second event count exceeding a second combination threshold. Other embodiments are described and claimed.
Abstract:
Embodiments of methods and apparatuses for restricted speculative execution are disclosed. In an embodiment, a processor includes configuration storage, an execution circuit, and a controller. The configuration storage is to store an indicator to enable a restricted speculative execution mode of operation of the processor, wherein the processor is to restrict speculative execution when operating in restricted speculative execution mode. The execution circuit is to perform speculative execution. The controller to restrict speculative execution by the execution circuit when the restricted speculative execution mode is enabled.
Abstract:
Embodiments of methods and apparatuses for restricted speculative execution are disclosed. In an embodiment, a processor includes configuration storage, an execution circuit, and a controller. The configuration storage is to store an indicator to enable a restricted speculative execution mode of operation of the processor, wherein the processor is to restrict speculative execution when operating in restricted speculative execution mode. The execution circuit is to perform speculative execution. The controller to restrict speculative execution by the execution circuit when the restricted speculative execution mode is enabled.
Abstract:
A processing device including a linear address transformation circuit to determine that a metadata value stored in a portion of a linear address falls within a pre-defined metadata range. The metadata value corresponds to a plurality of metadata bits. The linear address transformation circuit to replace each of the plurality of the metadata bits with a constant value.