Christophe Leroy's on April 7, 2020 4:16 am:
> + ret = syscall_exit_prepare_end(ret, regs, ti_flags);
> + if (unlikely(ret & 0x8000)) {
> + ret &= ~0x8000;
We could just add our own set of defines for these, there's no real
reason to use _TIF_RESTOREALL as I had.
To allow that, syscall_exit_prepare() gets split in 3 parts.
On PPC32, the three parts are called from entry_32.S
On PPC64, we keep a syscall_exit_prepare() function which
concatenates the three parts.
One benefit is also that the likely part of
syscall_exit_prepare_begin() and the
