LXR linux/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#include <xen/xen.h>
   6
   7enum ipi_vector {
   8        XEN_RESCHEDULE_VECTOR,
   9        XEN_CALL_FUNCTION_VECTOR,
  10        XEN_CALL_FUNCTION_SINGLE_VECTOR,
  11        XEN_SPIN_UNLOCK_VECTOR,
  12        XEN_IRQ_WORK_VECTOR,
  13        XEN_NMI_VECTOR,
  14
  15        XEN_NR_IPIS,
  16};
  17
  18static inline int xen_irqs_disabled(struct pt_regs *regs)
  19{
  20        return raw_irqs_disabled_flags(regs->flags);
  21}
  22
  23/* No need for a barrier -- XCHG is a barrier on x86. */
  24#define xchg_xen_ulong(ptr, val) xchg((ptr), (val))
  25
  26extern int xen_have_vector_callback;
  27
  28/*
  29 * Events delivered via platform PCI interrupts are always
  30 * routed to vcpu 0 and hence cannot be rebound.
  31 */
  32static inline bool xen_support_evtchn_rebind(void)
  33{
  34        return (!xen_hvm_domain() || xen_have_vector_callback);
  35}
  36
  37#endif /* _ASM_X86_XEN_EVENTS_H */
  38