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powerpc64: Avoid calling isync twice
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Authored by breno.leitao_gmail.com on Mar 4 2018, 9:41 PM.

Details

Summary

It is not necessary to call isync() after calling mtmsr() function, mainly
because the mtmsr() calls 'isync' internally to synchronize the machine state
register. Other than that, isync() just calls the 'isync' instruction, thus,
the 'isync' instruction is being called twice, and that seems to be unnecessary.

This patch just remove the unecessary calls to isync() after mtmsr().

Diff Detail

Repository
rS FreeBSD src repository
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

jhibbits accepted this revision.Apr 5 2018, 7:03 PM
This revision is now accepted and ready to land.Apr 5 2018, 7:03 PM
This revision was automatically updated to reflect the committed changes.