[PATCH 4.14 038/159] x86/entry/64: Simplify reg restore code in the standard IRET paths

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Andy Lutomirski commit e872045bfd9c465a8555bab4b8567d56a4d2d3bb upstream. The old code restored all the registers with movq instead of pop. In theory, this was done because

[PATCH 4.14 038/159] x86/entry/64: Simplify reg restore code in the standard IRET paths

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Andy Lutomirski commit e872045bfd9c465a8555bab4b8567d56a4d2d3bb upstream. The old code restored all the registers with movq instead of pop. In theory, this was done because some CPUs have