riscv: Make sure local hart's icache is synced in pmap_sync_icache
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Authored by jrtc27 on Apr 6 2020, 8:59 PM.

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rS359672: riscv: Make sure local hart's icache is synced in pmap_sync_icache

Summary

The only way to flush the local hart's icache is with a FENCE.I (or an
equivalent SBI call); a normal FENCE is insufficient and, for the
single-hart case, unnecessary.

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rS FreeBSD src repository - subversion

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Event Timeline

jrtc27 created this revision.Apr 6 2020, 8:59 PM

Harbormaster completed remote builds in B30325: Diff 70272.Apr 6 2020, 8:59 PM

I broke this in rS339367 when I switched to using sbi_remove_fence_i as I had cleared the current CPU from the mask before passing that mask to SBI.

This revision is now accepted and ready to land.Apr 6 2020, 9:42 PM

markj accepted this revision.Apr 6 2020, 9:48 PM

Closed by commit rS359672: riscv: Make sure local hart's icache is synced in pmap_sync_icache (authored by jrtc27). · Explain WhyApr 6 2020, 10:31 PM

This revision was automatically updated to reflect the committed changes.

jrtc27 added a commit: rS359672: riscv: Make sure local hart's icache is synced in pmap_sync_icache.

Herald added a subscriber: imp. · View Herald TranscriptApr 6 2020, 10:31 PM