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 
7 enum 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 
xen_irqs_disabled(struct pt_regs * regs)18 static 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 
26 extern 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  */
xen_support_evtchn_rebind(void)32 static 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