diff --git a/arch/x86/include/asm/xen/hypervisor.h b/arch/x86/include/asm/xen/hypervisor.h
index 64fbd2dbc5b7..a9088250770f 100644
--- a/arch/x86/include/asm/xen/hypervisor.h
+++ b/arch/x86/include/asm/xen/hypervisor.h
@@ -62,11 +62,6 @@ void xen_arch_unregister_cpu(int num);
 #ifdef CONFIG_PVH
 void __init xen_pvh_init(struct boot_params *boot_params);
 void __init mem_map_via_hcall(struct boot_params *boot_params_p);
-#ifdef CONFIG_XEN_PVH
-void __init xen_reserve_extra_memory(struct boot_params *bootp);
-#else
-static inline void xen_reserve_extra_memory(struct boot_params *bootp) { }
-#endif
 #endif
 
 /* Lazy mode for batching updates / context switch */
diff --git a/arch/x86/platform/pvh/enlighten.c b/arch/x86/platform/pvh/enlighten.c
index a12117f3d4de..00a92cb2c814 100644
--- a/arch/x86/platform/pvh/enlighten.c
+++ b/arch/x86/platform/pvh/enlighten.c
@@ -74,9 +74,6 @@ static void __init init_pvh_bootparams(bool xen_guest)
 	} else
 		xen_raw_printk("Warning: Can fit ISA range into e820\n");
 
-	if (xen_guest)
-		xen_reserve_extra_memory(&pvh_bootparams);
-
 	pvh_bootparams.hdr.cmd_line_ptr =
 		pvh_start_info.cmdline_paddr;
 
diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c
index 89984018141c..ac0a8adb2c50 100644
--- a/arch/x86/xen/enlighten_pvh.c
+++ b/arch/x86/xen/enlighten_pvh.c
@@ -8,6 +8,7 @@
 #include <asm/io_apic.h>
 #include <asm/hypervisor.h>
 #include <asm/e820/api.h>
+#include <asm/setup.h>
 
 #include <xen/xen.h>
 #include <asm/xen/interface.h>
@@ -40,8 +41,9 @@ EXPORT_SYMBOL_GPL(xen_pvh);
  * hypervisor should notify us which memory ranges are suitable for creating
  * foreign mappings, but that's not yet implemented.
  */
-void __init xen_reserve_extra_memory(struct boot_params *bootp)
+static void __init pvh_reserve_extra_memory(void)
 {
+	struct boot_params *bootp = &boot_params;
 	unsigned int i, ram_pages = 0, extra_pages;
 
 	for (i = 0; i < bootp->e820_entries; i++) {
@@ -93,14 +95,21 @@ void __init xen_reserve_extra_memory(struct boot_params *bootp)
 	}
 }
 
+static void __init pvh_arch_setup(void)
+{
+	pvh_reserve_extra_memory();
+
+	if (xen_initial_domain())
+		xen_add_preferred_consoles();
+}
+
 void __init xen_pvh_init(struct boot_params *boot_params)
 {
 	xen_pvh = 1;
 	xen_domain_type = XEN_HVM_DOMAIN;
 	xen_start_flags = pvh_start_info.flags;
 
-	if (xen_initial_domain())
-		x86_init.oem.arch_setup = xen_add_preferred_consoles;
+	x86_init.oem.arch_setup = pvh_arch_setup;
 	x86_init.oem.banner = xen_banner;
 
 	xen_efi_init(boot_params);