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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2022/05/09 12:09:37 UTC

[GitHub] [incubator-nuttx] zhuyanlinzyl commented on pull request #6222: xtensa: move fpu register to XCPTCONTEXT_REGS

zhuyanlinzyl commented on PR #6222:
URL: https://github.com/apache/incubator-nuttx/pull/6222#issuecomment-1121016687

   > Please note that one significant impact of this is an increase of the stack size. This moves all the coprocessors saving area to the stack not just the FPU. For SoCs where they have more than just one coprocessor, like the ESP32-S3, users will need to be careful when selecting their stack sizes.
   > 
   Yes, It increase stack size. But it decrease xcp struct size(heap size). And with the commit `arch/xtensa: Replace the xcp context with stack context to improve context switching`.  It will decrease time in fpu context switch.


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