Re: [PATCH pve-kernel v4 0/2] fix #8027: restore built-in Hyper-V VMBus

[山﨑結友 <miagetegorann@gmail.com>]

Gentle ping, can anyone please take a look?
The series still applies cleanly on current master.

Thanks,
結友

On Sat, Oct 24, 2026 02:24 PM, 結友 <miagetegorann@gmail.com> wrote:

> v4 is a transport-only resend of the same two commits.
> Please disregard v1-v3: the Gmail API delivery path rewrote inline
> patch lines or lost attachment data. This version is sent directly
> with git send-email over SMTP. No code or commit-message changes.
> Sorry for the repeated submissions.
>
> This series restores built-in VMBus support for the Proxmox VE installer
> in Hyper-V Generation 2 guests. Linux 6.18 split HYPERV_VMBUS out of
> HYPERV;
> the existing HYPERV=y override therefore no longer makes hv_vmbus built in.
> The installer takes one snapshot of sysfs modalias paths, so the VMBus
> storage children must be enumerated before that snapshot.
>
> Patch 1 fixes the ABI parser first: three namespaced VMBus exports would
> otherwise be reported as missing when moved from hv_vmbus into vmlinux.
> Patch 2 enables HYPERV_VMBUS=y. Config-override cleanup and general build
> validation changes are kept in a separate follow-up series.
>
> Validation of this exact two-commit submission:
>   - Generated patches apply with git am --whitespace=error-all, with the
>     same resulting tree. Perl syntax and all 12 ABI regression tests pass.
>   - Clean complete amd64 make deb succeeds for the fixed and modular
>     control builds in Debian trixie with rustc 1.94.1 and pahole 1.30.
>     CONFIG_RUST and BTF are enabled. Both have the same existing lintian
>     perf-bench man-page warning; no build or lintian errors.
>   - Strict fresh-build ABI checks (SKIPABI=0, empty blacklist) preserve all
>     32,726 symbols, CRCs, export types and namespaces. The fixed build has
>     only the expected 47 VMBus provider moves into vmlinux.
>   - Gen2 A/B test: the fresh modular control reproduces ISO-not-found;
>     the fixed ISO auto-discovers storage on three cold boots, completes
>     installation, and passes three installed disk-only cold boots.
>     /init is unchanged and hv_storvsc is not manually preloaded.
>   - The installed image hash matches the build artifact. Storage I/O,
>     persistent data across cold boots, SSH/network, ZFS module loading
>     and PVE services pass on Gen2 and non-Hyper-V QEMU/KVM.
>   - QEMU/KVM also passes complete installation, two installed cold boots
>     and installation of the newly built headers and perf packages.
>   - Hyper-V Gen1 passes complete BIOS installation, two installed cold
>     boots, persistent disk I/O, networking and ZFS module loading.
>   - arm64: full native-emulated Debian package build and minimal QEMU
>     initramfs boot, virtio ext4 I/O and networking pass.
>
> Validation limits:
>   - No arm64 Hyper-V host was available. arm64 QEMU tests do not cover
>     Hyper-V on arm64 or a complete Proxmox VE arm64 installation.
>   - arm64 QEMU directly boots the verified packaged EFI zboot payload;
>     the EFI firmware entry path is not tested. There is no previous arm64
>     ABI or firmware baseline in this repository, so those comparisons
>     were skipped by the standard build rules.
>   - Hyper-V tests used unsigned test kernels with Secure Boot disabled.
>
> Base: current pve-kernel master at 78f3d3e2f3ce28c51b80919bc3fc35
> a399ddb3c7.
> Bug: https://bugzilla.proxmox.com/show_bug.cgi?id=8027
>
> 結友 (2):
>   d/scripts: correctly compare namespaced ABI exports
>   fix #8027: config: enable CONFIG_HYPERV_VMBUS
>
>  .gitignore                        |   1 +
>  README                            |  13 +++
>  debian/rules.d/config-common.opts |   1 +
>  debian/scripts/abi-check          |  56 +++++++++---
>  debian/tests/test_abi_check.py    | 140 ++++++++++++++++++++++++++++++
>  5 files changed, 198 insertions(+), 13 deletions(-)
>  create mode 100644 debian/tests/test_abi_check.py
>
>
> base-commit: 78f3d3e2f3ce28c51b80919bc3fc35a399ddb3c7
> --
> 2.56.0.windows.1
>
>