commit 2fff071d28b54f050f62654dad4ec111b8416d8e upstream.
Backport summary: for 5.4 kernel fsgsbase support.
While looking at the TSS io bitmap it turned out that any change in that
area would require identical changes to copy_thread_tls(). The 32 and 64
bit variants share sufficient code to consolidate them into a common
function to avoid duplication of upcoming modifications.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
(cherry picked from commit 2fff071d28b54f050f62654dad4ec111b8416d8e)
Signed-off-by: Ethan Zhao <Haifeng.Zhao@intel.com>
Thomas Gleixner