ia64/pv_ops: gate page paravirtualization.
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>
diff --git a/arch/ia64/include/asm/native/patchlist.h b/arch/ia64/include/asm/native/patchlist.h
new file mode 100644
index 0000000..be16ca9
--- /dev/null
+++ b/arch/ia64/include/asm/native/patchlist.h
@@ -0,0 +1,38 @@
+/******************************************************************************
+ * arch/ia64/include/asm/native/inst.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
+ *
+ */
+
+#define __paravirt_start_gate_fsyscall_patchlist \
+ __ia64_native_start_gate_fsyscall_patchlist
+#define __paravirt_end_gate_fsyscall_patchlist \
+ __ia64_native_end_gate_fsyscall_patchlist
+#define __paravirt_start_gate_brl_fsys_bubble_down_patchlist \
+ __ia64_native_start_gate_brl_fsys_bubble_down_patchlist
+#define __paravirt_end_gate_brl_fsys_bubble_down_patchlist \
+ __ia64_native_end_gate_brl_fsys_bubble_down_patchlist
+#define __paravirt_start_gate_vtop_patchlist \
+ __ia64_native_start_gate_vtop_patchlist
+#define __paravirt_end_gate_vtop_patchlist \
+ __ia64_native_end_gate_vtop_patchlist
+#define __paravirt_start_gate_mckinley_e9_patchlist \
+ __ia64_native_start_gate_mckinley_e9_patchlist
+#define __paravirt_end_gate_mckinley_e9_patchlist \
+ __ia64_native_end_gate_mckinley_e9_patchlist
diff --git a/arch/ia64/include/asm/paravirt.h b/arch/ia64/include/asm/paravirt.h
index a73e77a..fc433f6 100644
--- a/arch/ia64/include/asm/paravirt.h
+++ b/arch/ia64/include/asm/paravirt.h
@@ -35,6 +35,41 @@
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