hw: cannot include hw/hw.h from user emulation

All qdev definitions are available from other headers, user-mode
emulation does not need hw/hw.h.

By considering system emulation only, it is simpler to disentangle
hw/hw.h from NEED_CPU_H.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

exec.c

@@ -25,23 +25,23 @@
 #include "qemu/cutils.h"
 #include "cpu.h"
 #include "tcg.h"
-#include "hw/hw.h"
+#include "hw/qdev-core.h"
 #if !defined(CONFIG_USER_ONLY)
 #include "hw/boards.h"
 #endif
-#include "hw/qdev.h"
 #include "sysemu/kvm.h"
 #include "sysemu/sysemu.h"
 #include "hw/xen/xen.h"
 #include "qemu/timer.h"
 #include "qemu/config-file.h"
 #include "qemu/error-report.h"
-#include "exec/memory.h"
-#include "sysemu/dma.h"
-#include "exec/address-spaces.h"
 #if defined(CONFIG_USER_ONLY)
 #include <qemu.h>
 #else /* !CONFIG_USER_ONLY */
+#include "hw/hw.h"
+#include "exec/memory.h"
+#include "sysemu/dma.h"
+#include "exec/address-spaces.h"
 #include "sysemu/xen-mapcache.h"
 #include "trace.h"
 #endif
@@ -641,7 +641,6 @@ void cpu_exec_exit(CPUState *cpu)
 void cpu_exec_init(CPUState *cpu, Error **errp)
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
-    int cpu_index;
     Error *local_err = NULL;
 
     cpu->as = NULL;
@@ -668,7 +667,7 @@ void cpu_exec_init(CPUState *cpu, Error **errp)
 #if defined(CONFIG_USER_ONLY)
     cpu_list_lock();
 #endif
-    cpu_index = cpu->cpu_index = cpu_get_free_index(&local_err);
+    cpu->cpu_index = cpu_get_free_index(&local_err);
     if (local_err) {
         error_propagate(errp, local_err);
 #if defined(CONFIG_USER_ONLY)
@@ -678,14 +677,16 @@ void cpu_exec_init(CPUState *cpu, Error **errp)
     }
     QTAILQ_INSERT_TAIL(&cpus, cpu, node);
 #if defined(CONFIG_USER_ONLY)
+    (void) cc;
     cpu_list_unlock();
-#endif
+#else
     if (qdev_get_vmsd(DEVICE(cpu)) == NULL) {
-        vmstate_register(NULL, cpu_index, &vmstate_cpu_common, cpu);
+        vmstate_register(NULL, cpu->cpu_index, &vmstate_cpu_common, cpu);
     }
     if (cc->vmsd != NULL) {
-        vmstate_register(NULL, cpu_index, cc->vmsd, cpu);
+        vmstate_register(NULL, cpu->cpu_index, cc->vmsd, cpu);
     }
+#endif
 }
 
 #if defined(CONFIG_USER_ONLY)

include/hw/hw.h

@@ -3,10 +3,11 @@
 #define QEMU_HW_H
 
 
-#if !defined(CONFIG_USER_ONLY) && !defined(NEED_CPU_H)
-#include "exec/cpu-common.h"
+#ifdef CONFIG_USER_ONLY
+#error Cannot include hw/hw.h from user emulation
 #endif
 
+#include "exec/cpu-common.h"
 #include "exec/ioport.h"
 #include "hw/irq.h"
 #include "block/aio.h"

include/hw/ppc/openpic.h

@@ -2,7 +2,7 @@
 #define __OPENPIC_H__
 
 #include "qemu-common.h"
-#include "hw/qdev.h"
+#include "hw/qdev-core.h"
 #include "qom/cpu.h"
 
 #define TYPE_OPENPIC "openpic"

kvm-stub.c

@@ -12,7 +12,6 @@
 
 #include "qemu/osdep.h"
 #include "qemu-common.h"
-#include "hw/hw.h"
 #include "cpu.h"
 #include "sysemu/kvm.h"
 

target-i386/cpu.c

@@ -34,7 +34,6 @@
 #include "qapi/visitor.h"
 #include "sysemu/arch_init.h"
 
-#include "hw/hw.h"
 #if defined(CONFIG_KVM)
 #include <linux/kvm_para.h>
 #endif
@@ -43,6 +42,7 @@
 #include "hw/qdev-properties.h"
 #ifndef CONFIG_USER_ONLY
 #include "exec/address-spaces.h"
+#include "hw/hw.h"
 #include "hw/xen/xen.h"
 #include "hw/i386/apic_internal.h"
 #endif

target-s390x/cpu.c

@@ -30,10 +30,11 @@
 #include "qemu/cutils.h"
 #include "qemu/timer.h"
 #include "qemu/error-report.h"
-#include "hw/hw.h"
 #include "trace.h"
 #include "qapi/visitor.h"
+#include "migration/vmstate.h"
 #ifndef CONFIG_USER_ONLY
+#include "hw/hw.h"
 #include "sysemu/arch_init.h"
 #include "sysemu/sysemu.h"
 #include "hw/s390x/sclp.h"

target-s390x/mem_helper.c

@@ -22,7 +22,10 @@
 #include "cpu.h"
 #include "exec/helper-proto.h"
 #include "exec/cpu_ldst.h"
+
+#if !defined(CONFIG_USER_ONLY)
 #include "hw/s390x/storage-keys.h"
+#endif
 
 /*****************************************************************************/
 /* Softmmu support */

target-s390x/misc_helper.c

@@ -30,9 +30,9 @@
 #include <linux/kvm.h>
 #endif
 #include "exec/cpu_ldst.h"
-#include "hw/watchdog/wdt_diag288.h"
 
 #if !defined(CONFIG_USER_ONLY)
+#include "hw/watchdog/wdt_diag288.h"
 #include "sysemu/cpus.h"
 #include "sysemu/sysemu.h"
 #include "hw/s390x/ebcdic.h"