Defined in 2 files as a macro:

• arch/x86/include/asm/xen/interface.h, line 82 (as a macro)
• include/xen/arm/interface.h, line 45 (as a macro)

Referenced in 2 files:

• drivers/xen/events/events_2l.c, line 284
• drivers/xen/sys-hypervisor.c, line 297