x86/mm: move declaration of new_guest_cr3 to local pv/mm.h

It is only used by PV. The code can only be moved together with other
PV mm code.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

xen/arch/x86/pv/emul-priv-op.c

@@ -41,6 +41,7 @@
 
 #include "../x86_64/mmconfig.h"
 #include "emulate.h"
+#include "mm.h"
 
 /* Override macros from asm/page.h to make them work with mfn_t */
 #undef mfn_to_page

xen/arch/x86/pv/mm.h

@@ -6,6 +6,8 @@ l1_pgentry_t *map_guest_l1e(unsigned long linear, mfn_t *gl1mfn);
 void init_guest_l4_table(l4_pgentry_t l4tab[], const struct domain *d,
                          bool zap_ro_mpt);
 
+int new_guest_cr3(mfn_t mfn);
+
 /* Read a PV guest's l1e that maps this linear address. */
 static inline l1_pgentry_t guest_get_eff_l1e(unsigned long linear)
 {

xen/include/asm-x86/mm.h

@@ -546,7 +546,6 @@ void audit_domains(void);
 
 #endif
 
-int new_guest_cr3(mfn_t mfn);
 void make_cr3(struct vcpu *v, mfn_t mfn);
 void update_cr3(struct vcpu *v);
 int vcpu_destroy_pagetables(struct vcpu *);