This will be required by the rseq extensible ABI implementation on all
Linux architectures exposing the '__rseq_size' and '__rseq_offset'
symbols to set the initial value of the 'cpu_id' field which can be used
by applications to test if rseq is available and registered. As long as
the symbols are exposed it is valid for an application to perform this
test even if rseq is not yet implemented in libc for this architecture.
Both code paths are compile tested with build-many-glibcs.py but I don't
have access to any hardware to run the tests.
Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Arjun Shankar <arjun@redhat.com>
git://sourceware.org / glibc.git / commit