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UFFD 2 #9

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License Acceptance

By submitting this pull request, I confirm that my contribution is made under
the terms of the Apache 2.0 license. For more information on following
Developer Certificate of Origin and signing off your commits, please check
CONTRIBUTING.md.

PR Checklist

  • If a specific issue led to this PR, this PR closes the issue.
  • The description of changes is clear and encompassing.
  • Any required documentation changes (code and docs) are included in this PR.
  • API changes follow the Runbook for Firecracker API changes.
  • User-facing changes are mentioned in CHANGELOG.md.
  • All added/changed functionality is tested.
  • New TODOs link to an issue.
  • Commits meet contribution quality standards.

  • This functionality cannot be added in rust-vmm.

CompuIves added 11 commits July 23, 2022 17:35
Signed-off-by: Ives van Hoorne <[email protected]>

update test

Co-authored-by: Luminita Voicu <[email protected]>

move test to valid headers
This allows us to run VMs while streaming memory changes to disk

support mmap shared

update log

add configuration for memory backing file

Progress

tweaks
Firecracker used to map over the mmap when it was a restore. For
CodeSandbox this is not needed, as we use UFFD and we don't have the
limitation that the map was used for.

In fact, this is problematic for the UFFD handler, because it implicitly
unregisters the UFFD handler from the reclaimed range.
@CompuIves CompuIves changed the title Uffd superbranch 2 UFFD 2 Jun 17, 2023
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