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sysentvec: Retire sv_imgact_try as unneeded anymore
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Authored by dchagin on May 14 2023, 5:58 PM.
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Details

Summary

The sysentvec sv_imgact_try was used by kern_exec() to allow
non-native ABI to fixup shell path according to ABI root directory.
Since the non-native ABI can now specify its root directory directly
to namei() via pwd_exec() call this facility is not needed anymore.

PR: 72920

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