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48 changes: 26 additions & 22 deletions doc/openvmm-upstream-roadmap.md
Original file line number Diff line number Diff line change
Expand Up @@ -9,23 +9,24 @@
- Mapped fork tip: `a0556d7d85ce1fff89f5b45a98f15c5c79cbb6fb`, position 157. The graph, PR
summary, and commit mapping below cover positions 001-157 and the fixups at positions
334-340, 344, and 345.
- NVX's pinned OpenVMM revision: `bd2b27a2ef9339bd16692c93facb8d84952dc9f8`, position 359.
Positions 355-359, which microsoft/openvmm#4794 proposes for `feature/microvm/dev`, are
five commits on position 354, `832d5bb48`, the head of `feature/microvm/dev` since
microsoft/openvmm#4775 merged positions 353 and 354. Those are two commits on position 352,
`b92daa350`, which microsoft/openvmm#4773 merged with positions 350 and 351. Positions
350-352 are three commits on position 349, `d2338ea22`, which microsoft/openvmm#4769 merged
with position 348. Positions 348 and 349 are two commits on position 347, `57d0a18b3`, which
microsoft/openvmm#4767 merged with position 346. Positions 346 and 347 are two commits on
position 345, `e68871cc6`, which microsoft/openvmm#4762 merged with position 344. Positions
344 and 345 are two commits on position 343, `a12d9167f`, which microsoft/openvmm#4749
merged with positions 341 and 342. Positions 341-343 are three commits on position 340,
`2b681564d`, which microsoft/openvmm#4735 merged with position 339. Positions 339 and 340 are
two commits on position 338, `8a0d945ed`, which microsoft/openvmm#4734 merged, and position
338 is one commit on `79a501b63`, the head of the `feature/microvm/release/v2.3` branch of
microsoft/openvmm. The pin is 202 commits past the mapped tip on the same first-parent chain.
Positions 158-333, 341-343, and 346-359 are not yet assigned to PRs; see
[Commits after the mapped tip](#commits-after-the-mapped-tip).
- NVX's pinned OpenVMM revision: `c32c57d129a36fc8c82308d6659f8d7ab5955474`, position 361.
Positions 360 and 361, which microsoft/openvmm#4807 proposes for `feature/microvm/dev`, are
two commits on position 359, `bd2b27a2e`, the head of `feature/microvm/dev` since
microsoft/openvmm#4794 merged positions 355-359. Those are five commits on position 354,
`832d5bb48`, which microsoft/openvmm#4775 merged with position 353. Positions 353 and 354
are two commits on position 352, `b92daa350`, which microsoft/openvmm#4773 merged with
positions 350 and 351. Positions 350-352 are three commits on position 349, `d2338ea22`,
which microsoft/openvmm#4769 merged with position 348. Positions 348 and 349 are two commits
on position 347, `57d0a18b3`, which microsoft/openvmm#4767 merged with position 346.
Positions 346 and 347 are two commits on position 345, `e68871cc6`, which
microsoft/openvmm#4762 merged with position 344. Positions 344 and 345 are two commits on
position 343, `a12d9167f`, which microsoft/openvmm#4749 merged with positions 341 and 342.
Positions 341-343 are three commits on position 340, `2b681564d`, which microsoft/openvmm#4735
merged with position 339. Positions 339 and 340 are two commits on position 338, `8a0d945ed`,
which microsoft/openvmm#4734 merged, and position 338 is one commit on `79a501b63`, the head
of the `feature/microvm/release/v2.3` branch of microsoft/openvmm. The pin is 204 commits
past the mapped tip on the same first-parent chain. Positions 158-333, 341-343, and 346-361
are not yet assigned to PRs; see [Commits after the mapped tip](#commits-after-the-mapped-tip).
- Upstream main: `22c0485be597f87a76771e1db03eaa823a685ffc` (2026-10-22), the fork base.

## Upstream status
Expand Down Expand Up @@ -315,8 +316,8 @@ The physical branch is one first-parent chain:
-> PR14 fixup [336] -> PR09 fixup [337]
-> PR02 fixup [338] -> PR20 fixup [339] -> PR23 fixup [340]
-> unassigned [341-343] -> PR18 fixups [344-345]
-> unassigned [346-359]
-> bd2b27a2e (NVX pin)
-> unassigned [346-361]
-> c32c57d12 (NVX pin)
```

For upstream review, PR01-PR08 and PR14 can be rebased independently onto current upstream main,
Expand All @@ -338,8 +339,8 @@ PR18's position 111.

## Commits after the mapped tip

The NVX pin extends the chain past position 157 without merges. Of the 202 later commits,
positions 158-333, 341-343, and 346-359 are not yet classified or assigned to PRs, positions
The NVX pin extends the chain past position 157 without merges. Of the 204 later commits,
positions 158-333, 341-343, and 346-361 are not yet classified or assigned to PRs, positions
334-337 are the fixups of the `feature/microvm/release/v2.3` rebase, position 338 is a PR02
fixup, positions 339 and 340 are PR20 and PR23 fixups, and positions 344 and 345 are PR18
fixups.
Expand Down Expand Up @@ -392,6 +393,7 @@ This table groups them by topic in chain order; ranges are inclusive, as in the
| 353 | `057a2eaa6` | 1 | Test that the microVM virtio-fs device takes a dormant slot's state into the device of an aggregate of a directory and a file, which then saves the aggregate |
| 354 | `832d5bb48` | 1 | A platform restore may bind an aggregate, `--mount-aggregate` with its children, policy paths, and owner mode, to the filesystem slot that the snapshot left dormant, validated as at a cold boot, while the slot's device and the captured command line stay as captured; other tiers keep binding only a `--mount` (microsoft/openvmm#4775) |
| 355-359 | `2607a7d55..bd2b27a2e` | 5 | microVM virtio devices reach only the RAM ranges of the e820 map: guest memory views that admit only a set of ranges, a virtio queue that refuses a descriptor unless its memory admits the whole buffer, an MMIO transport that restricts device DMA and marks a device that addresses other memory as needing reset, and the loader's e820 RAM ranges, to which every microVM device is restricted (microsoft/openvmm#4794) |
| 360-361 | `c9ac93a63..c32c57d12` | 2 | CPU profile validation checks the CPU time bits, so a snapshot's host profile document must fix them too, and the catalog verifies each pinned profile once per process, before a partition uses it: its static data must form a valid profile whose canonical encoding is the encoding that snapshots embed, while the tests keep checking its digest (microsoft/openvmm#4807) |

Some of these commits change mapped work rather than add to it. Positions 246-250 remove the
legacy microVM clock paths and change files that PR10 and PR17 also change. Position 252 makes
Expand All @@ -407,7 +409,9 @@ have alike and no other commit of the chain changes, so they can go upstream on
Position 355 likewise changes only `guestmem`, which no other commit of the chain changes, so it
can go upstream on its own, and position 356 adds only the virtio queue's check on top of it.
Positions 357-359 build on the fork's virtio-mmio shared interrupt-status transport, MP-table
loader, and microVM worker.
loader, and microVM worker. Positions 360 and 361 change only `cpu_profile`, the fork's CPU
profile crate that positions 159-269 add, one of its test helpers in `virt_mshv`, and the
snapshot guide, so they build on that fork-only code.

## PR summary

Expand Down
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