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authorIsaku Yamahata <yamahata@valinux.co.jp>2009-03-04 15:05:43 +0300
committerTony Luck <tony.luck@intel.com>2009-03-26 20:51:12 +0300
commitb937dd76d07f2347684d6cc1e1ec4e2746417357 (patch)
treebe711211f1b83d8cebff60b01bbbd1e80e609295 /arch/ia64/xen
parente4ff5b8f545811008123dd9556a51d814f562fcf (diff)
downloadlinux-b937dd76d07f2347684d6cc1e1ec4e2746417357.tar.xz
ia64/pv_ops/xen: define xen specific gate page.
define xen specific gate page. At this phase bits in the gate page is same to native. At the next phase, it will be paravirtualized. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/xen')
-rw-r--r--arch/ia64/xen/Makefile16
-rw-r--r--arch/ia64/xen/gate-data.S3
-rw-r--r--arch/ia64/xen/xen_pv_ops.c32
3 files changed, 50 insertions, 1 deletions
diff --git a/arch/ia64/xen/Makefile b/arch/ia64/xen/Makefile
index b4ca2e6c0ead..94f0d8e7d9de 100644
--- a/arch/ia64/xen/Makefile
+++ b/arch/ia64/xen/Makefile
@@ -3,10 +3,24 @@
#
obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
- hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o
+ hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o \
+ gate-data.o
obj-$(CONFIG_IA64_GENERIC) += machvec.o
+# The gate DSO image is built using a special linker script.
+include $(srctree)/arch/ia64/kernel/Makefile.gate
+
+# tell compiled for xen
+CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_XEN
+
+# use same file of native.
+$(obj)/gate.o: $(src)/../kernel/gate.S FORCE
+ $(call if_changed_dep,as_o_S)
+$(obj)/gate.lds: $(src)/../kernel/gate.lds.S FORCE
+ $(call if_changed_dep,cpp_lds_S)
+
+
AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
# xen multi compile
diff --git a/arch/ia64/xen/gate-data.S b/arch/ia64/xen/gate-data.S
new file mode 100644
index 000000000000..7d4830afc91d
--- /dev/null
+++ b/arch/ia64/xen/gate-data.S
@@ -0,0 +1,3 @@
+ .section .data.gate.xen, "aw"
+
+ .incbin "arch/ia64/xen/gate.so"
diff --git a/arch/ia64/xen/xen_pv_ops.c b/arch/ia64/xen/xen_pv_ops.c
index d91336114344..bdf1acbce81c 100644
--- a/arch/ia64/xen/xen_pv_ops.c
+++ b/arch/ia64/xen/xen_pv_ops.c
@@ -179,6 +179,37 @@ struct pv_fsys_data xen_fsys_data __initdata = {
};
/***************************************************************************
+ * pv_patchdata
+ * patchdata addresses
+ */
+
+#define DECLARE(name) \
+ extern unsigned long __xen_start_gate_##name##_patchlist[]; \
+ extern unsigned long __xen_end_gate_##name##_patchlist[]
+
+DECLARE(fsyscall);
+DECLARE(brl_fsys_bubble_down);
+DECLARE(vtop);
+DECLARE(mckinley_e9);
+
+extern unsigned long __xen_start_gate_section[];
+
+#define ASSIGN(name) \
+ .start_##name##_patchlist = \
+ (unsigned long)__xen_start_gate_##name##_patchlist, \
+ .end_##name##_patchlist = \
+ (unsigned long)__xen_end_gate_##name##_patchlist
+
+static struct pv_patchdata xen_patchdata __initdata = {
+ ASSIGN(fsyscall),
+ ASSIGN(brl_fsys_bubble_down),
+ ASSIGN(vtop),
+ ASSIGN(mckinley_e9),
+
+ .gate_section = (void*)__xen_start_gate_section,
+};
+
+/***************************************************************************
* pv_cpu_ops
* intrinsics hooks.
*/
@@ -447,6 +478,7 @@ xen_setup_pv_ops(void)
pv_info = xen_info;
pv_init_ops = xen_init_ops;
pv_fsys_data = xen_fsys_data;
+ pv_patchdata = xen_patchdata;
pv_cpu_ops = xen_cpu_ops;
pv_iosapic_ops = xen_iosapic_ops;
pv_irq_ops = xen_irq_ops;