Merge commit 3669ef9f ("x86, tls: Interpret an all-zero struct user_desc...

Merge commit 3669ef9f ("x86, tls: Interpret an all-zero struct user_desc as 'no segment'") into x86/asm

Pick up the latestest asm fixes before advancing it any further.

Signed-off-by: Ingo Molnar <mingo@kernel.org>