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Differential D15708

Don’t bother looking for non-executable pages when a process is excluded from PTI.
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Authored by tychon on Jun 8 2018, 7:26 PM.
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rS334856: Don't bother looking for non-executable pages when a process is

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rS FreeBSD src repository - subversion
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tychon created this revision.Jun 8 2018, 7:26 PM
kib added inline comments.Jun 8 2018, 8:14 PM
sys/amd64/amd64/trap.c
773 ↗(On Diff #43471)

pti is not needed anymore ?

775 ↗(On Diff #43471)

Excess ().

tychon updated this revision to Diff 43476.Jun 8 2018, 8:22 PM
tychon marked an inline comment as done.

Incorporate feedback.

sys/amd64/amd64/trap.c
773 ↗(On Diff #43471)

You're right. I can replace pti with PCPU_GET(curpmap)->pm_ucr3 != PMAP_NO_CR3.

kib accepted this revision.Jun 8 2018, 8:33 PM
This revision is now accepted and ready to land.Jun 8 2018, 8:33 PM
Closed by commit rS334856: Don't bother looking for non-executable pages when a process is (authored by tychon). · Explain WhyJun 8 2018, 8:36 PM
This revision was automatically updated to reflect the committed changes.
Herald added a subscriber: imp. · View Herald TranscriptJun 8 2018, 8:36 PM

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head/
sys/
amd64/
amd64/
3 lines

Diff 43477

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head/sys/amd64/amd64/trap.c

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