Re: [PATCH v2 3/6] xen: xenstore: add possibility to preserve owner

[Paul Durrant]

On 21/11/2023 22:10, Volodymyr Babchuk wrote:
> Add option to preserve owner when creating an entry in Xen Store. This
> may be needed in cases when Qemu is working as device model in a

*may* be needed?

I don't undertstand why this patch is necessary and the commit comment 
isn't really helping me.

> domain that is Domain-0, e.g. in driver domain.
>
> "owner" parameter for qemu_xen_xs_create() function can have special
> value XS_PRESERVE_OWNER, which will make specific implementation to
> get original owner of an entry and pass it back to
> set_permissions() call.
>
> Please note, that XenStore inherits permissions, so even if entry is
> newly created by, it already has the owner set to match owner of entry
> at previous level.
>
> Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>