x86: move toggle_guest_mode to pv/domain.c

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

xen/arch/x86/pv/domain.c

@@ -213,6 +213,37 @@ int pv_domain_initialise(struct domain *d, unsigned int domcr_flags,
     return rc;
 }
 
+void toggle_guest_mode(struct vcpu *v)
+{
+    if ( is_pv_32bit_vcpu(v) )
+        return;
+
+    if ( cpu_has_fsgsbase )
+    {
+        if ( v->arch.flags & TF_kernel_mode )
+            v->arch.pv_vcpu.gs_base_kernel = __rdgsbase();
+        else
+            v->arch.pv_vcpu.gs_base_user = __rdgsbase();
+    }
+    v->arch.flags ^= TF_kernel_mode;
+    asm volatile ( "swapgs" );
+    update_cr3(v);
+    /* Don't flush user global mappings from the TLB. Don't tick TLB clock. */
+    asm volatile ( "mov %0, %%cr3" : : "r" (v->arch.cr3) : "memory" );
+
+    if ( !(v->arch.flags & TF_kernel_mode) )
+        return;
+
+    if ( v->arch.pv_vcpu.need_update_runstate_area &&
+         update_runstate_area(v) )
+        v->arch.pv_vcpu.need_update_runstate_area = 0;
+
+    if ( v->arch.pv_vcpu.pending_system_time.version &&
+         update_secondary_system_time(v,
+                                      &v->arch.pv_vcpu.pending_system_time) )
+        v->arch.pv_vcpu.pending_system_time.version = 0;
+}
+
 /*
  * Local variables:
  * mode: C

xen/arch/x86/x86_64/traps.c

@@ -254,36 +254,6 @@ void do_double_fault(struct cpu_user_regs *regs)
     panic("DOUBLE FAULT -- system shutdown");
 }
 
-void toggle_guest_mode(struct vcpu *v)
-{
-    if ( is_pv_32bit_vcpu(v) )
-        return;
-    if ( cpu_has_fsgsbase )
-    {
-        if ( v->arch.flags & TF_kernel_mode )
-            v->arch.pv_vcpu.gs_base_kernel = __rdgsbase();
-        else
-            v->arch.pv_vcpu.gs_base_user = __rdgsbase();
-    }
-    v->arch.flags ^= TF_kernel_mode;
-    asm volatile ( "swapgs" );
-    update_cr3(v);
-    /* Don't flush user global mappings from the TLB. Don't tick TLB clock. */
-    asm volatile ( "mov %0, %%cr3" : : "r" (v->arch.cr3) : "memory" );
-
-    if ( !(v->arch.flags & TF_kernel_mode) )
-        return;
-
-    if ( v->arch.pv_vcpu.need_update_runstate_area &&
-         update_runstate_area(v) )
-        v->arch.pv_vcpu.need_update_runstate_area = 0;
-
-    if ( v->arch.pv_vcpu.pending_system_time.version &&
-         update_secondary_system_time(v,
-                                      &v->arch.pv_vcpu.pending_system_time) )
-        v->arch.pv_vcpu.pending_system_time.version = 0;
-}
-
 unsigned long do_iret(void)
 {
     struct cpu_user_regs *regs = guest_cpu_user_regs();