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hwpmc: partially depessimize mmap handling if the module is not loaded

Description

hwpmc: partially depessimize mmap handling if the module is not loaded

In particular this means the pmc sx lock is no longer taken when an
executable mapping succeeds.

MFC after: 1 week

Details

Provenance
mjgAuthored on
Parents
rS312900: Squash a couple of uses of xpt_print_path()
Branches
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