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Microsoft patents faster network memory access for servers

Microsoft describes a method to speed up how computers share data over a network by pre-reserving space in the network card's memory map. The system locks specific memory locations in advance so the network hardware can access them directly without waiting for the main processor to set up each connection.

Why it mattersThis technical improvement could make high-speed data transfers between servers more efficient, which is important for cloud computing and data centers.

In the filing’s own words

Systems and methods are disclosed herein for improvements to memory registration. In an example system, a set of page table entries (PTEs) are reserved in a first network interface device of a first computing device. In the example, each page table entry comprises a placeholder for a memory pointer. A page in the physical memory is pinned by a kernel of the first computing device. In one example, the request to pin the page in the physical memory originates from an application seeking to perform an RDMA operation. A page table entry of the set of PTEs in the network interface device is configured with information indicative of a physical memory address corresponding to the pinned page. A remote direct memory access operation is subsequently performed over a network based on the page table entry.

What exactly they claim (claim 1)

1. A memory registration system comprising: a processor; and a memory device that stores program code structured to cause the processor to: reserve, in a first network interface device of a first computing device, a set of page table entries for an application, each page table entry comprising a placeholder for a memory pointer; pin, by a kernel of the first computing device, a page in a physical memory of the first computing device; configure a page table entry of the set of page table entries in the network interface device with information indicative of a physical memory address corresponding to the page; and perform a remote direct memory access (RDMA) operation over a network based on the page table entry.

Facts

Company
Microsoft (Microsoft Technology Licensing, LLC)
Official title
REMOTE DIRECT MEMORY ACCESS WITH ENHANCED MEMORY REGISTRATION
Publication number
US20260288646A1
Application number
19086780
Filed
Mar 21, 2025
Published
Sep 24, 2026
Inventors
3
Claims
20

Classified under

H04L 67/1097 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.