masayuki2009 opened a new issue #207: SMP for Cortex-A MPcore is unstable URL: https://github.com/apache/incubator-nuttx/issues/207 There were several discussions on SMP issues for Cortex-A MPcore in NuttX mailing list before. Yesterday I tried sabre-6quad:smp configuration with QEMU, and noticed that it's unstable even if I changed the configuration to use only 2cores instead of 4cores. Actually, heap memory was sometimes corrupted during booting up the secondary core. Even if it succeeded to boot, heap memory was corrupted when a new task is created. They are very basic use-cases and should work with QEMU. So, I think something is wrong with Cortex-A SMP implementation, because Cortex-M SMP (e.g. Sony Spresense in dual core mode) and RISC-V SMP (K210 Maix-bit) are much more stable.
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