On 6/2/23 09:25, Muhammad Usama Anjum wrote:
On 6/2/23 6:33 AM, John Hubbard wrote:
UFFDIO_CONTINUE_MODE_WP, UFFD_FEATURE_WP_UNPOPULATED, USERFAULTFD_IOC,
and USERFAULTFD_IOC_NEW are needed lately, but they are not in my host
(Arch Linux) distro's userfaultfd.h yet. So put them in here.
Selftests are never supposed to build with native header files. Build the
Ah yes, I remember that now. Of course, the problem is that few people
know or remember that, and it's undocumented as well.
headers in kernel source first. Then building the selftests picks up these
newly built headers by itself. The method to build header files has changed
to `make headers`. The following command builds the mm selftests
successfully every time for me.
make headers && make -C tools/testing/selftests/mm
Please let me know if this doesn't work for you. I'll try to reproduce and fix.
Yes thanks. That's a pointer to a full solution, which needs to:
a) automatically invoke "make headers", at least for selftests/mm for
now, and
b) Add something to perhaps Documentation/dev-tools/kselftest.rst to
document this requirement.
I'll work on that.
thanks,
--
John Hubbard
NVIDIA
