Memtest86+ adds Arm support, new memory tests, and USB reports

Memtest86+, a widely-used free, open-source memory tester, has expanded its capabilities to support ARM64 platforms, including Qualcomm Snapdragon X laptops, Raspberry Pi 4 & 5, and QEMU. This update introduces new memory tests, including a Bus stress test and a revamped random-sequence moving test optimized with SIMD instructions. These enhancements enable better detection of complex memory failures, particularly in modern DDR5+ memory systems.

The USB reporting feature, previously requested by users, allows saving full-text reports containing system information, memory modules, and testing results to a FAT32-formatted USB drive. Each report is numbered, ensuring previous reports remain intact.

Memtest86+ has also reworked its testing process to detect errors more swiftly and optimized the random-sequence moving test to utilize larger vector instructions. This new test targets common bus interface weaknesses on contemporary platforms, such as DDR5+, while remaining demanding on older architectures.

Additionally, Memtest86+ now checks the Checksum/CRC of each memory module's SPD (Serial Presence Detect) data and marks bad modules as BAD CRC!. This detection is crucial, as corrupted SPD data can cause motherboards to hang during POST. Memtest86+ can operate headlessly in test lab environments and CI build systems, providing a machine-parsable log output for easy parsing and analysis.