hw/xen: Split x86-specific declaration from generic hardware ones

xen_hvm_init() is restricted to the X86 architecture.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-6-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/i386/pc_piix.c

@@ -46,7 +46,7 @@
 #include "hw/sysbus.h"
 #include "sysemu/arch_init.h"
 #include "hw/i2c/smbus_eeprom.h"
-#include "hw/xen/xen.h"
+#include "hw/xen/xen-x86.h"
 #include "exec/memory.h"
 #include "exec/address-spaces.h"
 #include "hw/acpi/acpi.h"

hw/i386/xen/xen-hvm.c

@@ -22,6 +22,7 @@
 #include "hw/xen/xen_common.h"
 #include "hw/xen/xen-legacy-backend.h"
 #include "hw/xen/xen-bus.h"
+#include "hw/xen/xen-x86.h"
 #include "qapi/error.h"
 #include "qapi/qapi-commands-misc.h"
 #include "qemu/error-report.h"

include/hw/xen/xen-x86.h

+/*
+ * Xen X86-specific
+ *
+ * Copyright 2020 Red Hat, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef QEMU_HW_XEN_X86_H
+#define QEMU_HW_XEN_X86_H
+
+#include "hw/i386/pc.h"
+
+void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory);
+
+#endif /* QEMU_HW_XEN_X86_H */

include/hw/xen/xen.h

@@ -30,8 +30,6 @@ qemu_irq *xen_interrupt_controller_init(void);
 
 void xenstore_store_pv_console_info(int i, struct Chardev *chr);
 
-void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory);
-
 void xen_register_framebuffer(struct MemoryRegion *mr);
 
 #endif /* QEMU_HW_XEN_H */

stubs/xen-hw-stub.c

@@ -8,6 +8,7 @@
 
 #include "qemu/osdep.h"
 #include "hw/xen/xen.h"
+#include "hw/xen/xen-x86.h"
 
 void xenstore_store_pv_console_info(int i, Chardev *chr)
 {