Commit c7fdaf33 authored by Isaku Yamahata's avatar Isaku Yamahata Committed by Tony Luck

ia64/xen: introduce helper function to identify domain mode.

There are four operating modes Xen code may find itself running in:
- native
- hvm domain
- pv dom0
- pv domU
Signed-off-by: default avatarIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 8353b00f
/******************************************************************************
* hypervisor.h
*
* Linux-specific hypervisor handling.
*
* Copyright (c) 2002-2004, K A Fraser
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation; or, when distributed
* separately from the Linux kernel or incorporated into other
* software packages, subject to the following license:
*
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* of this source file (the "Software"), to deal in the Software without
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* and to permit persons to whom the Software is furnished to do so, subject to
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*/
#ifndef _ASM_IA64_XEN_HYPERVISOR_H
#define _ASM_IA64_XEN_HYPERVISOR_H
#ifdef CONFIG_XEN
#include <linux/init.h>
#include <xen/interface/xen.h>
#include <xen/interface/version.h> /* to compile feature.c */
#include <xen/features.h> /* to comiple xen-netfront.c */
#include <asm/xen/hypercall.h>
/* xen_domain_type is set before executing any C code by early_xen_setup */
enum xen_domain_type {
XEN_NATIVE,
XEN_PV_DOMAIN,
XEN_HVM_DOMAIN,
};
extern enum xen_domain_type xen_domain_type;
#define xen_domain() (xen_domain_type != XEN_NATIVE)
#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
#define xen_initial_domain() (xen_pv_domain() && \
(xen_start_info->flags & SIF_INITDOMAIN))
#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
/* deprecated. remove this */
#define is_running_on_xen() (xen_domain_type == XEN_PV_DOMAIN)
extern struct start_info *xen_start_info;
#else /* CONFIG_XEN */
#define xen_domain() (0)
#define xen_pv_domain() (0)
#define xen_initial_domain() (0)
#define xen_hvm_domain() (0)
#define is_running_on_xen() (0) /* deprecated. remove this */
#endif
#define is_initial_xendomain() (0) /* deprecated. remove this */
#endif /* _ASM_IA64_XEN_HYPERVISOR_H */
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