ia64/pv_ops/xen: paravirtualize entry.S for ia64/xen.
Isaku Yamahata [Fri, 17 Oct 2008 02:18:04 +0000 (11:18 +0900)]
paravirtualize entry.S for ia64/xen by multi compile.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/include/asm/xen/inst.h
arch/ia64/xen/Makefile
arch/ia64/xen/xen_pv_ops.c

index e6a25c3..19c2ae1 100644 (file)
 #define ia64_ivt                               xen_ivt
 #define DO_SAVE_MIN                            XEN_DO_SAVE_MIN
 
+#define __paravirt_switch_to                   xen_switch_to
+#define __paravirt_leave_syscall               xen_leave_syscall
+#define __paravirt_work_processed_syscall      xen_work_processed_syscall
+#define __paravirt_leave_kernel                        xen_leave_kernel
+#define __paravirt_pending_syscall_end         xen_work_pending_syscall_end
+#define __paravirt_work_processed_syscall_target \
+                                               xen_work_processed_syscall
+
 #define MOV_FROM_IFA(reg)      \
        movl reg = XSI_IFA;     \
        ;;                      \
index 5c87e4a..9b77e8a 100644 (file)
@@ -8,7 +8,7 @@ obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o \
 AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
 
 # xen multi compile
-ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S
+ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S
 ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o))
 obj-y += $(ASM_PARAVIRT_OBJS)
 define paravirtualized_xen
index c236f04..5b23cd5 100644 (file)
@@ -275,6 +275,22 @@ static const struct pv_cpu_ops xen_cpu_ops __initdata = {
                        = xen_intrin_local_irq_restore,
 };
 
+/******************************************************************************
+ * replacement of hand written assembly codes.
+ */
+
+extern char xen_switch_to;
+extern char xen_leave_syscall;
+extern char xen_work_processed_syscall;
+extern char xen_leave_kernel;
+
+const struct pv_cpu_asm_switch xen_cpu_asm_switch = {
+       .switch_to              = (unsigned long)&xen_switch_to,
+       .leave_syscall          = (unsigned long)&xen_leave_syscall,
+       .work_processed_syscall = (unsigned long)&xen_work_processed_syscall,
+       .leave_kernel           = (unsigned long)&xen_leave_kernel,
+};
+
 /***************************************************************************
  * pv_ops initialization
  */
@@ -286,4 +302,6 @@ xen_setup_pv_ops(void)
        pv_info = xen_info;
        pv_init_ops = xen_init_ops;
        pv_cpu_ops = xen_cpu_ops;
+
+       paravirt_cpu_asm_init(&xen_cpu_asm_switch);
 }