Teach arm64's pmap_remove_all() to skip pmap_invalidate_page() unless ATTR_AF is set
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Authored by alc on Nov 15 2019, 6:40 PM.

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markj
manu

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rS354792: Achieve two goals at once: (1) Avoid an unnecessary broadcast TLB

Summary

Achieve two goals at once: (1) Avoid an unnecessary broadcast TLB invalidation. (2) Prevent an "Invalid ASID" assertion failure.

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rS FreeBSD src repository - subversion

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alc created this revision.Nov 15 2019, 6:40 PM

Herald added subscribers: emaste, andrew. · View Herald TranscriptNov 15 2019, 6:40 PM

Add context.

markj accepted this revision.Nov 15 2019, 7:23 PM

This revision is now accepted and ready to land.Nov 15 2019, 7:23 PM

Closed by commit rS354792: Achieve two goals at once: (1) Avoid an unnecessary broadcast TLB (authored by alc). · Explain WhyNov 17 2019, 5:39 PM

This revision was automatically updated to reflect the committed changes.

alc added a commit: rS354792: Achieve two goals at once: (1) Avoid an unnecessary broadcast TLB.

Herald added a reviewer: manu. · View Herald TranscriptNov 17 2019, 5:39 PM

Herald added a subscriber: imp. · View Herald Transcript

Revision Contents
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head/

sys/

arm64/

pmap.c

5 lines

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head/sys/arm64/arm64/pmap.c

Teach arm64's pmap_remove_all() to skip pmap_invalidate_page() unless ATTR_AF is setClosedPublicActions