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powerpc64/pmap: micro-optimize some PVO-PTE logic

Description

powerpc64/pmap: micro-optimize some PVO-PTE logic

Summary:
moea64_pte_sync_native() and moea64_pte_unset_native() don't need the
full PTE created, they only need to check that the PVO has a matching
PTE to the PTE in the page table. Don't waste time creating the full
PTE in this case.

Reviewed by: luporl
Differential Revision: https://reviews.freebsd.org/D22341

Details

Provenance
jhibbitsAuthored on
Reviewer
luporl
Differential Revision
D22341: powerpc64/pmap: micro-optimize some PVO-PTE logic
Parents
rS355518: pf: Remove references to 'egress'
Branches
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