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Compute Express Link: Proposed Enhancements to UEFI and ACPI Specifications

Compute Express Link (CXL) is a new high-speed CPU-to-Device and CPU-to-Memory interconnect designed to accelerate next-generation data center performance. CXL is designed to be an industry open standard interface for high-speed communications, as accelerators and memory expanders are increasingly used to complement CPUs in support of emerging applications. The CXL 1.1 specification is already available, with work on future versions underway. CXL reinforces the need for standardization, with focus on technologies such as UEFI, ACPI and PCIe to provide the necessary interfaces between the firmware and the operating systems to support CXL new use cases of accelerators and memory expansion across different implementations. This presentation will first briefly introduce CXL 1.1 standard. It will then delve into the technical details of the proposed enhancements to the UEFI and ACPI specifications required for operating systems to manage CXL devices and ports in a system.
Recorded May 19 2020 39 mins
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Presented by
Mahesh Natu (Intel) and Thanu Rangarajan (Arm)
Presentation preview: Compute Express Link: Proposed Enhancements to UEFI and ACPI Specifications

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  • Compute Express Link: Proposed Enhancements to UEFI and ACPI Specifications Recorded: May 19 2020 39 mins
    Mahesh Natu (Intel) and Thanu Rangarajan (Arm)
    Compute Express Link (CXL) is a new high-speed CPU-to-Device and CPU-to-Memory interconnect designed to accelerate next-generation data center performance. CXL is designed to be an industry open standard interface for high-speed communications, as accelerators and memory expanders are increasingly used to complement CPUs in support of emerging applications. The CXL 1.1 specification is already available, with work on future versions underway. CXL reinforces the need for standardization, with focus on technologies such as UEFI, ACPI and PCIe to provide the necessary interfaces between the firmware and the operating systems to support CXL new use cases of accelerators and memory expansion across different implementations. This presentation will first briefly introduce CXL 1.1 standard. It will then delve into the technical details of the proposed enhancements to the UEFI and ACPI specifications required for operating systems to manage CXL devices and ports in a system.
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Webinars for the Firmware Community
Through a collaborative approach with world-class companies, institutions and experts, the UEFI Forum advances innovation in firmware technology standards. These extensible, globally-adopted UEFI specifications bring new functionality and enhanced security to the evolution of devices, firmware and operating systems.

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  • Title: Compute Express Link: Proposed Enhancements to UEFI and ACPI Specifications
  • Live at: May 19 2020 3:00 pm
  • Presented by: Mahesh Natu (Intel) and Thanu Rangarajan (Arm)
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