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From: Roger Pau Monné <royger@FreeBSD.org>
Date: Tue, 11 Mar 2014 10:07:55 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r263003 - head/sys/xen
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Author: royger
Date: Tue Mar 11 10:07:55 2014
New Revision: 263003
URL: http://svnweb.freebsd.org/changeset/base/263003

Log:
  xen: add macro to detect if running as Dom0
  
  Approved by: gibbs
  Sponsored by: Citrix Systems R&D
  
  xen/xen-os.h:
   - Add macro to detect if running as Dom0.

Modified:
  head/sys/xen/xen-os.h

Modified: head/sys/xen/xen-os.h
==============================================================================
--- head/sys/xen/xen-os.h	Tue Mar 11 10:07:01 2014	(r263002)
+++ head/sys/xen/xen-os.h	Tue Mar 11 10:07:55 2014	(r263003)
@@ -82,6 +82,13 @@ xen_hvm_domain(void)
 	return (xen_domain_type == XEN_HVM_DOMAIN);
 }
 
+static inline bool
+xen_initial_domain(void)
+{
+	return (xen_domain() && HYPERVISOR_start_info != NULL &&
+	    (HYPERVISOR_start_info->flags & SIF_INITDOMAIN) != 0);
+}
+
 #ifndef xen_mb
 #define xen_mb() mb()
 #endif