* Andy Lutomirski <l...@kernel.org> wrote:
> ARCH_GET_FS and ARCH_GET_GS attempted to figure out the fsbase and
> gsbase respectively from saved thread state. This was wrong: fsbase
> and gsbase live in registers while a thread is running, not in
> memory.
So I'm wondering, the current code looks totally broken,what user-space code
can
possibly use this? I checked glibc and Wine, and neither of them does. Wine
uses
ARCH_SET_GS and glibc uses ARCH_SET_FS, but that's all - neither actually tries
to
use the ARCH_GET_* reading APIs.
So for backporting purposes I'd be much happier about simply returning -EINVAL
or
-ENOSYS, and we could re-introduce this code in v4.7.
Thanks,
Ingo
