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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/03/19 07:15:59 UTC

[GitHub] [incubator-nuttx] Ouss4 commented on a change in pull request #3095: ESP32: Allow a BSS section to reside in external memory

Ouss4 commented on a change in pull request #3095:
URL: https://github.com/apache/incubator-nuttx/pull/3095#discussion_r597451568



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File path: arch/xtensa/src/common/xtensa_attr.h
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@@ -63,4 +69,10 @@
 
 #define RTC_RODATA_ATTR __attribute__((section(".rtc.rodata")))
 
+/* Forces bss variable into external memory. */

Review comment:
       The data that usually gets in SPIRAM are large bss data. Yes, the purpose is to save some internal memory.
   
   I made EXT_RAM_ATTR a no-op when CONFIG_XTENSA_EXTMEM_BSS is not enabled and changed the "force" to "allow", although, I find that when we are using the attribute we are actually forcing the variable to reside in that section.




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