arm64_pmap: narrow scope of bti_same test
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Authored by dougm on May 11 2024, 6:57 AM.

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alc
andrew
manu

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rGb5a1f0406b9d: arm64_pmap: narrow scope of bti_same test

Summary

The pmap_bti_same test in pmap_enter_l3c only happens in the !ADDR_IS_KERNEL case; in the other case, a KASSERT fails. So move the test into that case to save a bit of time when ADDR_IS_KERNEL.

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rG FreeBSD src repository

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dougm created this revision.May 11 2024, 6:57 AM

Herald added a reviewer: andrew. · View Herald TranscriptMay 11 2024, 6:57 AM

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dougm requested review of this revision.May 11 2024, 6:57 AM

andrew added inline comments.May 13 2024, 4:20 PM

sys/arm64/arm64/pmap.c
5680–5681	This is unneeded, it always returns true for a kernel address as bti is always enabled.

Remove unneeded KASSERT.

dougm marked an inline comment as done.May 13 2024, 5:41 PM

andrew accepted this revision.May 13 2024, 6:05 PM

This revision is now accepted and ready to land.May 13 2024, 6:05 PM

Closed by commit rGb5a1f0406b9d: arm64_pmap: narrow scope of bti_same test (authored by dougm). · Explain WhyMay 14 2024, 4:24 AM

This revision was automatically updated to reflect the committed changes.

dougm added a commit: rGb5a1f0406b9d: arm64_pmap: narrow scope of bti_same test.

Herald added a subscriber: imp. · View Herald TranscriptMay 14 2024, 4:24 AM

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sys/

arm64/

pmap.c

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arm64_pmap: narrow scope of bti_same testClosedPublicActions