linux_dsm_epyc7002/include/asm-ia64/paravirt.h
Isaku Yamahata 3e0879deb7 [IA64] pvops: add an early setup hook for pv_ops.
This patch adds a setup hook in the very early boot sequence
before start_kernel() to initialize paravirtualization stuff.
The hook will be set by each pv loader code or by using multi entry point.

Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-27 14:39:54 -07:00

66 lines
1.7 KiB
C

/******************************************************************************
* include/asm-ia64/paravirt.h
*
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __ASM_PARAVIRT_H
#define __ASM_PARAVIRT_H
#ifdef CONFIG_PARAVIRT_GUEST
#define PARAVIRT_HYPERVISOR_TYPE_DEFAULT 0
#define PARAVIRT_HYPERVISOR_TYPE_XEN 1
#ifndef __ASSEMBLY__
#include <asm/hw_irq.h>
#include <asm/meminit.h>
/******************************************************************************
* general info
*/
struct pv_info {
unsigned int kernel_rpl;
int paravirt_enabled;
const char *name;
};
extern struct pv_info pv_info;
static inline int paravirt_enabled(void)
{
return pv_info.paravirt_enabled;
}
static inline unsigned int get_kernel_rpl(void)
{
return pv_info.kernel_rpl;
}
#endif /* !__ASSEMBLY__ */
#else
/* fallback for native case */
#endif /* CONFIG_PARAVIRT_GUEST */
#endif /* __ASM_PARAVIRT_H */