x86/vmx: move vmx_update_debug_state() in vmcs.c and declare it static

Move vmx_update_debug_state() in vmcs.c because it is used only in this
file and limit its scope to this file by declaring it static and removing
its declaration from vmx.h.

No functional change intended.

Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>

xen/arch/x86/hvm/vmx/vmcs.c

@@ -1868,6 +1868,18 @@ void vmx_vmentry_failure(void)
 
 void noreturn vmx_asm_do_vmentry(void);
 
+static void vmx_update_debug_state(struct vcpu *v)
+{
+    if ( v->arch.hvm.debug_state_latch )
+        v->arch.hvm.vmx.exception_bitmap |= 1U << TRAP_int3;
+    else
+        v->arch.hvm.vmx.exception_bitmap &= ~(1U << TRAP_int3);
+
+    vmx_vmcs_enter(v);
+    vmx_update_exception_bitmap(v);
+    vmx_vmcs_exit(v);
+}
+
 void cf_check vmx_do_resume(void)
 {
     struct vcpu *v = current;

xen/arch/x86/hvm/vmx/vmx.c

@@ -1613,18 +1613,6 @@ static void cf_check vmx_update_host_cr3(struct vcpu *v)
     vmx_vmcs_exit(v);
 }
 
-void vmx_update_debug_state(struct vcpu *v)
-{
-    if ( v->arch.hvm.debug_state_latch )
-        v->arch.hvm.vmx.exception_bitmap |= 1U << TRAP_int3;
-    else
-        v->arch.hvm.vmx.exception_bitmap &= ~(1U << TRAP_int3);
-
-    vmx_vmcs_enter(v);
-    vmx_update_exception_bitmap(v);
-    vmx_vmcs_exit(v);
-}
-
 static void cf_check vmx_update_guest_cr(
     struct vcpu *v, unsigned int cr, unsigned int flags)
 {

xen/arch/x86/include/asm/hvm/vmx/vmx.h

@@ -88,7 +88,6 @@ void cf_check vmx_vlapic_msr_changed(struct vcpu *v);
 struct hvm_emulate_ctxt;
 void vmx_realmode_emulate_one(struct hvm_emulate_ctxt *hvmemul_ctxt);
 void vmx_realmode(struct cpu_user_regs *regs);
-void vmx_update_debug_state(struct vcpu *v);
 void vmx_update_exception_bitmap(struct vcpu *v);
 void vmx_update_cpu_exec_control(struct vcpu *v);
 void vmx_update_secondary_exec_control(struct vcpu *v);