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ia64/xen: short-circuit tests for dom0 

This patch is ia64 counter part of clean up of the xen predicates.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Isaku Yamahata 2009-03-04 21:05:33 +09:00 committed by Tony Luck
parent e8c3b42057
commit ac93925acb
1 changed files with 18 additions and 21 deletions
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37
arch/ia64/include/asm/xen/hypervisor.h
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@ -33,9 +33,6 @@
#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 */
@ -43,22 +40,32 @@
/* 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,
XEN_NATIVE, /* running on bare hardware */
XEN_PV_DOMAIN, /* running in a PV domain */
XEN_HVM_DOMAIN, /* running in a Xen hvm domain*/
};
#ifdef CONFIG_XEN
extern enum xen_domain_type xen_domain_type;
#else
#define xen_domain_type XEN_NATIVE
#endif
#define xen_domain() (xen_domain_type != XEN_NATIVE)
#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
#define xen_pv_domain() (xen_domain() && \
xen_domain_type == XEN_PV_DOMAIN)
#define xen_hvm_domain() (xen_domain() && \
xen_domain_type == XEN_HVM_DOMAIN)
#ifdef CONFIG_XEN_DOM0
#define xen_initial_domain() (xen_pv_domain() && \
(xen_start_info->flags & SIF_INITDOMAIN))
#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
#else
#define xen_initial_domain() (0)
#endif
/* deprecated. remove this */
#define is_running_on_xen() (xen_domain_type == XEN_PV_DOMAIN)
#ifdef CONFIG_XEN
extern struct shared_info *HYPERVISOR_shared_info;
extern struct start_info *xen_start_info;
@ -74,16 +81,6 @@ void force_evtchn_callback(void);
/* For setup_arch() in arch/ia64/kernel/setup.c */
void xen_ia64_enable_opt_feature(void);
#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 */