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ia64/pv_ops: gate page paravirtualization.

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paravirtualize gate page by allowing each pv_ops instances
to define its own gate page.

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 21:05:42 +09:00
committed by Tony Luck
parent 1aec1c558a
commit e4ff5b8f54
9 changed files with 231 additions and 43 deletions
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35
arch/ia64/include/asm/paravirt.h
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@ -35,6 +35,41 @@ extern struct pv_fsys_data pv_fsys_data;
unsigned long *paravirt_get_fsyscall_table(void);
char *paravirt_get_fsys_bubble_down(void);
/******************************************************************************
* patchlist addresses for gate page
*/
enum pv_gate_patchlist {
PV_GATE_START_FSYSCALL,
PV_GATE_END_FSYSCALL,
PV_GATE_START_BRL_FSYS_BUBBLE_DOWN,
PV_GATE_END_BRL_FSYS_BUBBLE_DOWN,
PV_GATE_START_VTOP,
PV_GATE_END_VTOP,
PV_GATE_START_MCKINLEY_E9,
PV_GATE_END_MCKINLEY_E9,
};
struct pv_patchdata {
unsigned long start_fsyscall_patchlist;
unsigned long end_fsyscall_patchlist;
unsigned long start_brl_fsys_bubble_down_patchlist;
unsigned long end_brl_fsys_bubble_down_patchlist;
unsigned long start_vtop_patchlist;
unsigned long end_vtop_patchlist;
unsigned long start_mckinley_e9_patchlist;
unsigned long end_mckinley_e9_patchlist;
void *gate_section;
};
extern struct pv_patchdata pv_patchdata;
unsigned long paravirt_get_gate_patchlist(enum pv_gate_patchlist type);
void *paravirt_get_gate_section(void);
#endif
#ifdef CONFIG_PARAVIRT_GUEST