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Differential D57623

riscv: Add support for the Svinval extension
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Authored by bnovkov on Wed, Jun 17, 9:21 PM.
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F160404738: D57623.diff
Wed, Jun 24, 4:27 AM
F160377833: D57623.diff
Tue, Jun 23, 9:47 PM
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imp
mhorne

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Reviewers
markj
mhorne
Group Reviewers
riscv
Summary

This change adds wrappers for the new fine-grained TLB invalidation
instructions and extends the capability detection logic to include
the Svinval extension, which is mandatory in the RVA23S64 profile.

Event: BSDCan 2026

Diff Detail

Repository
rG FreeBSD src repository
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Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 73948
Build 70831: arc lint + arc unit

Event Timeline

bnovkov created this revision.Wed, Jun 17, 9:21 PM
Herald added a subscriber: imp. · View Herald TranscriptWed, Jun 17, 9:21 PM
bnovkov requested review of this revision.Wed, Jun 17, 9:21 PM
Harbormaster completed remote builds in B73948: Diff 179961.Wed, Jun 17, 9:21 PM
bnovkov added a child revision: D57624: riscv/pmap.c: Add an Svinval-aware variant of pmap_invalidate_range.Wed, Jun 17, 9:24 PM
mhorne accepted this revision.Wed, Jun 24, 1:50 PM
mhorne added a subscriber: mhorne.

Is this implemented on the Spacemit K1 ?

sys/riscv/include/cpufunc.h
151

I don't think you are using this yet. But I would suggest this signature instead.

This revision is now accepted and ready to land.Wed, Jun 24, 1:50 PM
markj added inline comments.Wed, Jun 24, 4:11 PM
sys/conf/kern.mk
169

Are there compilers which will reject this?

sys/riscv/include/cpufunc.h
151

+1

Revision Contents
Changeset List

PathSize
sys/
conf/
2 lines
riscv/
include/
28 lines
1 line
riscv/
2 lines

Diff 179961

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sys/conf/kern.mk

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sys/riscv/include/cpufunc.h

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sys/riscv/include/md_var.h

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sys/riscv/riscv/identcpu.c

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