1. bb89855 x86, um: ... and asm-x86 move by Al Viro · 16 years ago[Renamed from include/asm-x86/irq_regs_64.h]
  2. 96a388d i386/x86_64: move headers to include/asm-x86 by Thomas Gleixner · 17 years ago[Renamed from include/asm-x86_64/irq_regs.h]
  3. 7d12e78 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers by David Howells · 18 years ago