Ralf,
If there was TIF_USEDMSA in "prev" task then it means that all MSA HW is
in use.
And switch_to() checks this and transfers it to resume() to indicate
that MSA processing should be done.
Macro call "msa_save_all a0" right before disabling MSA in Config5
does a save of MSA registers. If it doesn't cause an exception then it
means that Config5 does exist and Config5.MIPS_CONF5_MSAEN does exist too.
- Leonid.
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