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mips: Save off the BSP HWREna register to share with APs
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Authored by jhibbits on Dec 12 2024, 7:00 PM.

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Subscribers

imp

jrtc27

Details

Reviewers

adrian

Group Reviewers

MIPS

Summary

Without sharing the HWREna register it may default to something
undesirable on APs, leading to either reserved instruction exceptions or
emulated access, as in the UserLocal register (TCB pointer).

Diff Detail

Repository

rS FreeBSD src repository - subversion

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 61123
Build 58007: arc lint + arc unit

Event Timeline

jhibbits created this revision.Dec 12 2024, 7:00 PM

Herald added a subscriber: imp. · View Herald TranscriptDec 12 2024, 7:00 PM

jhibbits requested review of this revision.Dec 12 2024, 7:00 PM

Harbormaster completed remote builds in B61123: Diff 147890.Dec 12 2024, 7:00 PM

nice catch! please land on stable/13 and stable/12! tyvm!

This revision is now accepted and ready to land.Dec 12 2024, 7:04 PM

jrtc27 added a subscriber: jrtc27.Dec 12 2024, 7:06 PM

jrtc27 added inline comments.

sys/mips/mips/mp_machdep.c
63	This is already in cpuinfo

jrtc27 added inline comments.Dec 12 2024, 7:12 PM

sys/mips/mips/mp_machdep.c
301	With `#include <machine/cpuinfo.h>`

Alternative proposal: https://reviews.freebsd.org/D48064

Abandoned in favor of D48064.

Revision Contents
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Path

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sys/

mips/

mp_machdep.c

8 lines

Diff 147890

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sys/mips/mips/mp_machdep.c

mips: Save off the BSP HWREna register to share with APsAbandonedPublicActions