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Remove SPARE_USRSPACE.
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Authored by jhb on Dec 5 2019, 9:53 PM.
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Details

Summary

This constant was used to reserve space at the top of the stack to hold
translated system call arguments for non-default ABIs (the "stackgap").
However, none of the compatibility ABIs have used the stackgap in many
years and the last use of SPARE_USRSPACE was removed in r355373.

Test Plan
  • grep -r doesn't turn up any instances in the kernel
  • amd64, i386, and aarch64 kernels build

Diff Detail

Repository
rS FreeBSD src repository - subversion
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Unit
Tests Not Applicable

Event Timeline

This revision is now accepted and ready to land.Dec 6 2019, 1:05 PM
This revision was automatically updated to reflect the committed changes.