On Thu, 31 Mar 2022 16:29:30 +0900 Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote: > Well, the intended usage of no-export-headers is to > cater to the UAPI supported by only some architectures. > We have kvm(_para).h here because not all architectures > support kvm. > > If you do not want to export the UAPI, > you should not put it in include/uapi/. > > After the API is finalized, you can move it to > include/uapi. So a little bit of background. I and a few others thought it was done, and pushed it to Linus. Then when it made it into his tree (and mentioned on LWN) it got a wider audience that had concerns. After they brought up those concerns, we agreed that this needs a bit more work. I was hoping not to do a full revert and simply marked the change for broken so that it can be worked on upstream with the wider audience. Linus appears to be fine with this approach, as he helped me with my "mark for BROKEN" patch. Mathieu's concern is that this header file could be used in older distros with newer kernels that have it implemented and added this to keep out of those older distros. The options to make Mathieu sleep better at night are: 1) this patch 2) move this file out of uapi. 3) revert the entire thing. I really do not want to do #3 but I am willing to do 1 or 2. -- Steve
