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Differential D22989

mips o32: provide 64-bit atomics
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Authored by kevans on Jan 1 2020, 4:38 PM.
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Summary

This marks mips o32 actually no longer functional in SMP configurations, and CI20/JZ4780 will need to be retired or fixed.

__with_interrupts_disabled style (and in-fact most of the implementations) happily stolen from arm v4 atomics to make auditing correctness simple.

Test Plan

Test booted D22827 all the way to userland, seems functional.

Diff Detail

Repository
rS FreeBSD src repository - subversion
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Build Status
Buildable 28413

Event Timeline

kevans created this revision.Jan 1 2020, 4:38 PM
Harbormaster completed remote builds in B28413: Diff 66212.Jan 1 2020, 4:38 PM
kevans abandoned this revision.Jan 2 2020, 7:57 PM

Instead going to opt for reusing D22976, which will remove the need to kill o32 SMP for a little bit.

Revision Contents
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sys/
mips/
include/
193 lines

Diff 66212

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sys/mips/include/atomic.h

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