From c7fdaf338679f5e0343bfdfa7ae1e2fdb41ff0b1 Mon Sep 17 00:00:00 2001 From: Isaku Yamahata Date: Fri, 17 Oct 2008 11:17:57 +0900 Subject: 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: Isaku Yamahata Signed-off-by: Tony Luck --- arch/ia64/include/asm/xen/hypervisor.h | 75 ++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 arch/ia64/include/asm/xen/hypervisor.h (limited to 'arch') diff --git a/arch/ia64/include/asm/xen/hypervisor.h b/arch/ia64/include/asm/xen/hypervisor.h new file mode 100644 index 00000000000..d1f84e12c0e --- /dev/null +++ b/arch/ia64/include/asm/xen/hypervisor.h @@ -0,0 +1,75 @@ +/****************************************************************************** + * 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: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this source file (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, modify, + * merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#ifndef _ASM_IA64_XEN_HYPERVISOR_H +#define _ASM_IA64_XEN_HYPERVISOR_H + +#ifdef CONFIG_XEN + +#include +#include +#include /* to compile feature.c */ +#include /* to comiple xen-netfront.c */ +#include + +/* 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 */ -- cgit v1.2.3