arch/x86/include/asm/xen/events.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_XEN_EVENTS_H
   3 #define _ASM_X86_XEN_EVENTS_H
   4
   5 enum ipi_vector {
   6         XEN_RESCHEDULE_VECTOR,
   7         XEN_CALL_FUNCTION_VECTOR,
   8         XEN_CALL_FUNCTION_SINGLE_VECTOR,
   9         XEN_SPIN_UNLOCK_VECTOR,
  10         XEN_IRQ_WORK_VECTOR,
  11         XEN_NMI_VECTOR,
  12
  13         XEN_NR_IPIS,
  14 };
  15
  16 static inline int xen_irqs_disabled(struct pt_regs *regs)
  17 {
  18         return raw_irqs_disabled_flags(regs->flags);
  19 }
  20
  21 /* No need for a barrier -- XCHG is a barrier on x86. */
  22 #define xchg_xen_ulong(ptr, val) xchg((ptr), (val))
  23
  24 extern int xen_have_vector_callback;
  25
  26 /*
  27  * Events delivered via platform PCI interrupts are always
  28  * routed to vcpu 0 and hence cannot be rebound.
  29  */
  30 static inline bool xen_support_evtchn_rebind(void)
  31 {
  32         return (!xen_hvm_domain() || xen_have_vector_callback);
  33 }
  34
  35 #endif /* _ASM_X86_XEN_EVENTS_H */