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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/06/01 13:53:22 UTC

[GitHub] [incubator-nuttx] patacongo commented on pull request #3626: libc: Move pthread stuff to userspace

patacongo commented on pull request #3626:
URL: https://github.com/apache/incubator-nuttx/pull/3626#issuecomment-852143714


   >     1. Move pthread_exit & pthread_create to USERSPACE to unify the convention that how to drop to userspace from kernel side like this:
   >        `regs[REG_EPC]      = (uintptr_t)USERSPACE->pthread_startup`
   >        `regs[REG_EPC]      = (uintptr_t)USERSPACE->pthread_exit`
   
   This part I don't understand.  That doesn't unify the designs, it makes them different:  There is no USERSPACE in KERNEL mode.  I don't understand why this is a good thing.


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