Re: [PATCH 1/9] uapi: import VDUSE and VFIO header from v7.3-rc3 kernel
flat view
From: Stephen Hemminger <stephen@networkplumber.org>
Date: 2026-09-24 15:37:14
On Thu, 24 Sep 2026 16:00:19 +0200 David Marchand [off-list ref] wrote:
We import and update all uapi headers or none in DPDK, for a given kernel version. And the CI checks that the imported headers are aligned with the announced kernel version (meaning that we can't update our local copy of the header). We could import linux/stddef.h but it may become a problem in the future. Or pass a -D'__counted_by(a)=' option in the DPDK project CFLAGS if the compiler does not support __counted_by... Or another option would be to update all users of linux/vfio.h in DPDK... :-( Other ideas?
I think you need to have headers as a complete set. For iproute2 ended up having to build a dependency graph so if foo.h includes bar.h that both foo.h and bar.h are in private tree. Yes it is a nuisance, but you can't expect kernel to support header cherry picking.