Messages in this thread | | | Date | Mon, 4 Apr 2022 22:35:52 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH 8/8] virtio_ring.h: do not include <stdint.h> from exported header |
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On Mon, Apr 04, 2022 at 10:04:02AM +0200, Arnd Bergmann wrote: > The header is shared between kernel and other projects using virtio, such as > qemu and any boot loaders booting from virtio devices. It's not technically a > /kernel/ ABI, but it is an ABI and for practical reasons the kernel version is > maintained as the master copy if I understand it correctly.
Besides that fact that as you correctly states these are not a UAPI at all, qemu and bootloades are not specific to Linux and can't require a specific kernel version. So the same thing we do for file system formats or network protocols applies here: just copy the damn header. And as stated above any reasonably portable userspace needs to have a copy anyway.
If it is just as a "master copy" it can live in drivers/virtio/, just like we do for other formats.
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