On Mon, Dec 01 2025, David Woodhouse <[email protected]> wrote:

> On Mon, 2025-12-01 at 14:04 +0100, Cornelia Huck wrote:
>> On Mon, Dec 01 2025, "Chalios, Babis" <[email protected]> wrote:
>> 
>> > VMClock now supports a vm_generation_counter field in the struct it
>> > exposes to userspace. The field signals a disruption that happened due
>> > to a guest loaded from a snapshot.
>> > 
>> > Moreover, VMClock now optionally supports device notifications when the
>> > seq_count changes to a new even value.
>> > 
>> > Signed-off-by: Babis Chalios <[email protected]>
>> > ---
>> >  include/standard-headers/linux/vmclock-abi.h | 20 ++++++++++++++++++++
>> >  1 file changed, 20 insertions(+)
>> 
>> Please either do a full linux-headers update against a specific Linux
>> kernel version, or mark this as a placeholder patch if the code is not
>> yet merged.
>
> The Linux patches are being posted simultaneously, so they'll be in
> Linux 6.20 (7.0?) at the earliest. We'll want to ingest the update
> before then.
>
> The intent is not for the Linux source to be the canonical definition
> of the data structure; we *are* working on publishing the spec, and
> Babis referenced the current draft. It isn't in the form of C source
> code though, so I suspect it makes sense to keep including the Linux
> header?

Oh, including the Linux header sounds fine; but as long as the code has
not yet been merged there, this needs to be marked as not yet ready to
merge on the QEMU side. (And it needs to be updated by a full headers
update when merged.)


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