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kboot: Keep track of what's used in the segment
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Authored by imp on Feb 1 2023, 6:24 AM.
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Details

Summary

Keep track of how much is used in the segment as we allocate it to the
application. Set memsz to 0 first, and increment it as used. Adjust the
bufsz before we call kexec so the kernel copies the right amount (it's
an error for bufsz to be bigger than memsz, so we set them == when we
retrieve the segment). Make sure we round to the page size, otherwise
kexec_load gets cranky.

Sponsored by: Netflix

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rG FreeBSD src repository
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Event Timeline

imp requested review of this revision.Feb 1 2023, 6:24 AM

rebase / refactor / redo

This revision is now accepted and ready to land.Feb 2 2023, 4:44 PM
This revision was automatically updated to reflect the committed changes.