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By Zayden R., August 21, 2026
Linux 7.3 is set to include support for CXL Type-2 drivers, starting with AMD Solarflare NICs. This enhancement is crucial for engineers utilizing CXL accelerators, offering improved network performance and error handling.
Linux 7.3 is poised to deliver significant updates with the integration of Compute Express Link (CXL) Type-2 driver support, marking a pivotal development for AMD Solarflare NICs. This addition, highlighted by Phoronix, ensures that the latest AMD Solarflare SFC9100-family network cards can leverage the performance benefits of CXL accelerators.
The CXL subsystem updates, merged recently, complete the basic support for CXL Type-2 drivers within the Linux kernel. This includes unit testing support to identify regressions in CXL core type2 functions, ensuring robust operation of these advanced features. Engineers have eagerly awaited this support, as it promises enhanced performance and error handling capabilities for network interfaces.
The integration is facilitated via the new SFC_CXL Kconfig option, enabling CXL support for the targeted NIC family. This aligns with the broader trend in the Linux kernel development cycle, which has seen significant contributions and updates in recent versions. As Igalia reports, Linux 7.2 was already one of the busiest cycles, featuring advances in CPU and GPU scheduling.
AMD's contribution to the networking subsystem with the Solarflare driver is a strategic move, leveraging CXL's potential for improved network throughput and latency management. As the Linux 7.3 kernel approaches its release, either version 7.3 or 7.4 is expected to be designated as this year's Long Term Support (LTS) version, making these enhancements even more impactful for long-term deployments.
For sysadmins and network engineers, this update means it's time to review and potentially upgrade network infrastructures to capitalize on these improvements. With CXL's growing importance in data centers, the support for AMD Solarflare NICs in Linux 7.3 is a step forward in optimizing network performance and reliability.
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