[GitHub] [incubator-nuttx] xiaoxiang781216 commented on a diff in pull request #6303: MPFS: Implement S-mode head and start function

[GitBox]

xiaoxiang781216 commented on code in PR #6303:
URL: https://github.com/apache/incubator-nuttx/pull/6303#discussion_r877856797


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arch/risc-v/src/mpfs/mpfs_head.S:
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@@ -100,30 +100,17 @@ __start:
   csrr a0, mhartid
   beqz a0, .skip_e51
 
-  /* Clear sscratch if u54 */
-
-  csrw sscratch, zero

Review Comment:
   one simple question: why not use #ifdef/#else/#endif to separate M-mode or 
S-mode specific code?



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