x86: add x86_clear_dbregs() and ensure all ABI exec set_regs method clear debug registers file
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Authored by kib on Apr 9 2021, 11:30 PM.

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Reviewers

jhb
emaste
mhorne

Commits

rG94172affa43a: amd64: clear debug registers on execing 32bit Linux binary
rGd50adfec9ee7: amd64: clear debug registers on execing 32bit native binary
rG2f1588474768: amd64 linux64: use x86_clear_dbregs()
rG290b0d123ae2: x86: use x86_clear_dbregs() on fork
rGa8b75a57c9b2: x86: add x86_clear_dbregs() helper

Summary

Also, clear PCB_DBGREGS flag on clearing debug registers on fork

Per-commit split is available at https://kib.kiev.ua/git/gitweb.cgi?p=deviant3.git;a=shortlog;h=refs/heads/exec_dbregs

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Repository

rG FreeBSD src repository

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Tests Not Applicable

Event Timeline

kib requested review of this revision.Apr 9 2021, 11:30 PM

kib created this revision.

kib edited the summary of this revision. (Show Details)

jhb accepted this revision.Apr 9 2021, 11:52 PM

This revision is now accepted and ready to land.Apr 9 2021, 11:52 PM

Closed by commit rGa8b75a57c9b2: x86: add x86_clear_dbregs() helper (authored by kib). · Explain WhyApr 10 2021, 1:26 AM

This revision was automatically updated to reflect the committed changes.

kib added a commit: rGa8b75a57c9b2: x86: add x86_clear_dbregs() helper.

kib added a commit: rG290b0d123ae2: x86: use x86_clear_dbregs() on fork.

kib added a commit: rG2f1588474768: amd64 linux64: use x86_clear_dbregs().

kib added a commit: rGd50adfec9ee7: amd64: clear debug registers on execing 32bit native binary.

kib added a commit: rG94172affa43a: amd64: clear debug registers on execing 32bit Linux binary.

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Changeset List

Path

Size

sys/

amd64/

machdep.c

50 lines

i386/

machdep.c

50 lines

x86/

include/

x86_var.h

1 line

Diff 87166

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sys/amd64/amd64/machdep.c

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sys/i386/i386/machdep.c

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x86: add x86_clear_dbregs() and ensure all ABI exec set_regs method clear debug registers fileClosedPublicActions

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Diff 87166

sys/amd64/amd64/machdep.c

sys/i386/i386/machdep.c

sys/x86/include/x86_var.h

x86: add x86_clear_dbregs() and ensure all ABI exec set_regs method clear debug registers file
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