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authorIsaku Yamahata <yamahata@valinux.co.jp>2009-03-04 21:05:35 +0900
committerTony Luck <tony.luck@intel.com>2009-03-26 10:49:47 -0700
commit533bd156231eec4b399c36579e7c30b6f52cfd29 (patch)
tree3969ea9b17317b518c6303d251a61da1f2094013
parentdd97d5cb540939602cba9af6f88e883a6fe451f0 (diff)
ia64/pv_ops/xen: preliminary to paravirtualizing fsys.S for xen.
This is a preliminary patch to paravirtualizing fsys.S. compile fsys.S twice one for native and one for xen, and switch them at run tine. Later fsys.S will be paravirtualized. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
-rw-r--r--arch/ia64/include/asm/xen/inst.h3
-rw-r--r--arch/ia64/xen/Makefile2
-rw-r--r--arch/ia64/xen/xen_pv_ops.c14
3 files changed, 18 insertions, 1 deletions
diff --git a/arch/ia64/include/asm/xen/inst.h b/arch/ia64/include/asm/xen/inst.h
index 19c2ae1d878..e8e01b28d2a 100644
--- a/arch/ia64/include/asm/xen/inst.h
+++ b/arch/ia64/include/asm/xen/inst.h
@@ -33,6 +33,9 @@
#define __paravirt_work_processed_syscall_target \
xen_work_processed_syscall
+#define paravirt_fsyscall_table xen_fsyscall_table
+#define paravirt_fsys_bubble_down xen_fsys_bubble_down
+
#define MOV_FROM_IFA(reg) \
movl reg = XSI_IFA; \
;; \
diff --git a/arch/ia64/xen/Makefile b/arch/ia64/xen/Makefile
index 0ad0224693d..b4ca2e6c0ea 100644
--- a/arch/ia64/xen/Makefile
+++ b/arch/ia64/xen/Makefile
@@ -10,7 +10,7 @@ obj-$(CONFIG_IA64_GENERIC) += machvec.o
AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
# xen multi compile
-ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S
+ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S fsys.S
ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o))
obj-y += $(ASM_PARAVIRT_OBJS)
define paravirtualized_xen
diff --git a/arch/ia64/xen/xen_pv_ops.c b/arch/ia64/xen/xen_pv_ops.c
index fa3b967e69c..fe72308321b 100644
--- a/arch/ia64/xen/xen_pv_ops.c
+++ b/arch/ia64/xen/xen_pv_ops.c
@@ -24,6 +24,7 @@
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/pm.h>
+#include <linux/unistd.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/xencomm.h>
@@ -166,6 +167,18 @@ static const struct pv_init_ops xen_init_ops __initconst = {
};
/***************************************************************************
+ * pv_fsys_data
+ * addresses for fsys
+ */
+
+extern unsigned long xen_fsyscall_table[NR_syscalls];
+extern char xen_fsys_bubble_down[];
+struct pv_fsys_data xen_fsys_data __initdata = {
+ .fsyscall_table = (unsigned long *)xen_fsyscall_table,
+ .fsys_bubble_down = (void *)xen_fsys_bubble_down,
+};
+
+/***************************************************************************
* pv_cpu_ops
* intrinsics hooks.
*/
@@ -355,6 +368,7 @@ xen_setup_pv_ops(void)
xen_info_init();
pv_info = xen_info;
pv_init_ops = xen_init_ops;
+ pv_fsys_data = xen_fsys_data;
pv_cpu_ops = xen_cpu_ops;
pv_iosapic_ops = xen_iosapic_ops;
pv_irq_ops = xen_irq_ops;