kvmtool/x86/include/kvm/interrupt.h

#ifndef KVM__INTERRUPT_H
#define KVM__INTERRUPT_H

#include <linux/types.h>
#include "kvm/bios.h"
#include "kvm/bios-export.h"

struct real_intr_desc {
	u16 offset;
	u16 segment;
} __attribute__((packed));

#define REAL_SEGMENT_SHIFT	4
#define REAL_SEGMENT(addr)	((addr) >> REAL_SEGMENT_SHIFT)
#define REAL_OFFSET(addr)	((addr) & ((1 << REAL_SEGMENT_SHIFT) - 1))
#define REAL_INTR_SIZE		(REAL_INTR_VECTORS * sizeof(struct real_intr_desc))

struct interrupt_table {
	struct real_intr_desc entries[REAL_INTR_VECTORS];
};

void interrupt_table__copy(struct interrupt_table *itable, void *dst, unsigned int size);
void interrupt_table__setup(struct interrupt_table *itable, struct real_intr_desc *entry);
void interrupt_table__set(struct interrupt_table *itable, struct real_intr_desc *entry, unsigned int num);

#endif /* KVM__INTERRUPT_H */