openvmm: name every CPUID difference in CPU-surface errors

doc/openvmm-upstream-roadmap.md

@@ -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: `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
+- NVX's pinned OpenVMM revision: `e4c741e1860de1e2149b3dd5d41863468705b02c`, position 365.
+  Positions 362-365, which microsoft/openvmm#4804 proposes for `feature/microvm/dev`, are
+  four commits on position 361, `c32c57d12`, the head of `feature/microvm/dev` since
+  microsoft/openvmm#4807 merged positions 360 and 361. Those are two commits on position 359,
+  `bd2b27a2e`, which microsoft/openvmm#4794 merged with positions 355-358. Positions 355-359
+  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
+  of the `feature/microvm/release/v2.3` branch of microsoft/openvmm. The pin is 208 commits
+  past the mapped tip on the same first-parent chain. Positions 158-333, 341-343, and 346-365
   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.
 
@@ -316,8 +317,8 @@ 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 [346-361]
-  -> c32c57d12 (NVX pin)
+  -> unassigned [346-365]
+  -> e4c741e18 (NVX pin)
 ```
 
 For upstream review, PR01-PR08 and PR14 can be rebased independently onto current upstream main,
@@ -339,8 +340,8 @@ PR18's position 111.
 
 ## Commits after the mapped tip
 
-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
+The NVX pin extends the chain past position 157 without merges. Of the 208 later commits,
+positions 158-333, 341-343, and 346-365 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.
@@ -394,6 +395,7 @@ This table groups them by topic in chain order; ranges are inclusive, as in the
 | 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) |
+| 362-365 | `69ddc715b..e4c741e18` | 4 | The microVM's `E_CPU_SURFACE` errors name every CPUID difference rather than the first 16, each entry of a snapshot's effective CPUID record on one line with the registers in which it differs, and VP 0's non-zero CPUID entries outside the profile's tables together with the results that VP 0 does not observe; and the VM worker runs every CPU check of a partition, the comparison with the snapshot's record, the check of VP 0's CPUID, and the check that the backend supports the profile, even after one fails, and reports their failures together (microsoft/openvmm#4804) |
 
 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
@@ -411,7 +413,9 @@ can go upstream on its own, and position 356 adds only the virtio queue's check
 Positions 357-359 build on the fork's virtio-mmio shared interrupt-status transport, MP-table
 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.
+snapshot guide, so they build on that fork-only code. Positions 362-365 change only the CPU
+checks of the VM worker's time ABI, which positions 159-269 also add, and the snapshot guide's
+description of them.
 
 ## PR summary