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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2022/02/15 12:37:16 UTC

[GitHub] [incubator-nuttx] Ouss4 edited a comment on pull request #5336: xtensa: use swint to swith context

Ouss4 edited a comment on pull request #5336:
URL: https://github.com/apache/incubator-nuttx/pull/5336#issuecomment-1040222128


   Note that enabling a CPU interrupt must be done from the specific CPU.  We cannot enable CPU1's interrupts from CPU0.
   In this case then, I believe we need:
   1. A call to `g_irqmap[XTENSA_IRQ_SWINT] = IRQ_MKMAP(1, ESP32_CPUINT_SOFTWARE1);` This maps CPU1 interrupt. This can be done from any CPU.
   2. During CPU1 startup we call `up_enable_irq(XTENSA_IRQ_SWINT);`. 


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