[FS#465] kmodloader (ubox) Illegal intruction

[LEDE Bugs]

The following task has a new comment added:

FS#465 - kmodloader (ubox) Illegal intruction
User who did this - yousong (yousong)

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Default config and build (24kc and mips16) should work on this device just fine.

WNDR3700v4 is supposed to have a mips 74kc core with mips dsp2 ase extension.  The issue is now that instructions like lwx should not trigger a SIGILL on this board.  I am curious about the details.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=465#comment1686