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author | Isaku Yamahata <yamahata@valinux.co.jp> | 2008-10-17 02:17:57 (GMT) |
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committer | Tony Luck <tony.luck@intel.com> | 2008-10-17 17:01:46 (GMT) |
commit | c7fdaf338679f5e0343bfdfa7ae1e2fdb41ff0b1 (patch) | |
tree | 287fbb7d408822f4b1d3bc78ad420c58ad772270 /arch/ia64/include/asm/xen | |
parent | 8353b00f617c9bb432c6bcdf33a4f9c416dc5751 (diff) | |
download | linux-fsl-qoriq-c7fdaf338679f5e0343bfdfa7ae1e2fdb41ff0b1.tar.xz |
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 <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/include/asm/xen')
-rw-r--r-- | arch/ia64/include/asm/xen/hypervisor.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/xen/hypervisor.h b/arch/ia64/include/asm/xen/hypervisor.h new file mode 100644 index 0000000..d1f84e1 --- /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 <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 */ |