[PATCH] x86-64: Use direct TLS initial-exec access to update errno

[Carlos O'Donell]

On 12/04/2017 05:13 PM, H.J. Lu wrote:
> Replace __errno_location call with direct TLS initial-exec access to
> update errno.
> 
> Any comments?

What are the consequences of this change?

Have you tried debugging this code in gdb and does it make it easier or
harder to debug a single threaded application?

Why make these changes?

Cheers,
Carlos.