// wdm.h

NTSYSAPI VOID RtlPrefetchMemoryNonTemporal(
  [in] PVOID  Source,
  [in] SIZE_T Length
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-wdm-rtlprefetchmemorynontemporal)

RtlPrefetchMemoryNonTemporal function

Description

The RtlPrefetchMemoryNonTemporal routine provides a hint to the processor that a buffer should be temporarily moved into the processor cache.

Parameters

`Source` [in]

A pointer to the buffer to be moved into the processor cache.

`Length` [in]

The length of the buffer to be moved.

Return value

None.

Remarks

You should use this routine only for a buffer that will be written to or read from exactly once. Note that RtlPrefetchMemoryNonTemporal is only a hint to the processor: the buffer is not guaranteed to be moved into the cache. On x86-based and x64-based systems, this routine uses the prefetchnta instruction.

View the official Windows Driver Kit DDI reference