linux-kernel - Re: [PATCH v7 05/22] liveupdate: luo

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Message-ID: <CA+CK2bANLwj+nqDy8_dXgCBym_VFSFW26naqC3x7XED9tC-TYA@mail.gmail.com>
Date: Sun, 23 Nov 2025 14:25:13 -0500
From: Pasha Tatashin <pasha.tatashin@...een.com>
To: Mike Rapoport <rppt@...nel.org>
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Subject: Re: [PATCH v7 05/22] liveupdate: luo_core: add user interface

On Sun, Nov 23, 2025 at 9:20 AM Mike Rapoport <rppt@...nel.org> wrote:
>
> On Sat, Nov 22, 2025 at 05:23:32PM -0500, Pasha Tatashin wrote:
> > Introduce the user-space interface for the Live Update Orchestrator
> > via ioctl commands, enabling external control over the live update
> > process and management of preserved resources.
> >
> > The idea is that there is going to be a single userspace agent driving
> > the live update, therefore, only a single process can ever hold this
> > device opened at a time.
> >
> > The following ioctl commands are introduced:
> >
> > LIVEUPDATE_IOCTL_CREATE_SESSION
> > Provides a way for userspace to create a named session for grouping file
> > descriptors that need to be preserved. It returns a new file descriptor
> > representing the session.
> >
> > LIVEUPDATE_IOCTL_RETRIEVE_SESSION
> > Allows the userspace agent in the new kernel to reclaim a preserved
> > session by its name, receiving a new file descriptor to manage the
> > restored resources.
> >
> > Signed-off-by: Pasha Tatashin <pasha.tatashin@...een.com>
>
> Reviewed-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

Thanks

>
> > ---
> >  include/uapi/linux/liveupdate.h  |  64 +++++++++++
> >  kernel/liveupdate/luo_core.c     | 179 ++++++++++++++++++++++++++++++-
> >  kernel/liveupdate/luo_internal.h |  21 ++++
> >  3 files changed, 263 insertions(+), 1 deletion(-)
>
> --
> Sincerely yours,
> Mike.