Re: [PATCH 0/1] liveupdate: Add internal APIs for file preservation

[tarunsahu@google.com]

Hi,

Thankyou for sending it saperately, Now I can remove this from
guest_memfd series, And we can track it here.

I think it needs rebasing. I see it fails to apply to liveupdate/next
and mainline both.

Thanks

Samiullah Khawaja <skhawaja@google.com> writes:

> Live update orchestrator file handlers depend on the preservation of
> other files. To make sure that the dependency is preserved, the file
> handlers needs to fetch the preservation token of the preserved
> dependency. Similarly during restore, a file handler wants to fetch the
> restored file of the dependency.
>
> There are two known usecases of this,
>
> - VFIO-Cdev preservation requires the preservation of iommufd. This is
>   required by the IOMMU preservation series:
>   https://lore.kernel.org/all/20260427175633.1978233-1-skhawaja@google.com/
> - guest_memfd preservation requires the preservation of kvmfd. This is
>   required by the guest_memfd preservation series:
>   https://lore.kernel.org/all/20ae20f9d1a198b289444ebb4c824314cbba1bcf.1780676742.git.tarunsahu@google.com/
>
> This patch was being sent as part of the IOMMU preservation series, but
> now it is being sent separately.
>
> Pasha Tatashin (1):
>   liveupdate: luo_file: Add internal APIs for file preservation
>
>  include/linux/liveupdate.h       | 21 ++++++++++
>  kernel/liveupdate/luo_file.c     | 69 ++++++++++++++++++++++++++++++++
>  kernel/liveupdate/luo_internal.h | 17 ++++++++
>  3 files changed, 107 insertions(+)
>
> base-commit: 34e8f02817e31826e76bb2ded48bf28fe921f20b
> -- 
> 2.54.0.1136.gdb2ca164c4-goog