hw/xen: Rename 'ram_memory' global variable as 'xen_memory'

To avoid a potential global variable shadow in
hw/i386/pc_piix.c::pc_init1(), rename Xen's
"ram_memory" as "xen_memory".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20231114143816.71079-11-philmd@linaro.org>

hw/arm/xen_arm.c

@@ -114,14 +114,14 @@ static void xen_init_ram(MachineState *machine)
         block_len = GUEST_RAM1_BASE + ram_size[1];
     }
 
-    memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
+    memory_region_init_ram(&xen_memory, NULL, "xen.ram", block_len,
                            &error_fatal);
 
-    memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", &ram_memory,
+    memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", &xen_memory,
                              GUEST_RAM0_BASE, ram_size[0]);
     memory_region_add_subregion(sysmem, GUEST_RAM0_BASE, &ram_lo);
     if (ram_size[1] > 0) {
-        memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", &ram_memory,
+        memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", &xen_memory,
                                  GUEST_RAM1_BASE, ram_size[1]);
         memory_region_add_subregion(sysmem, GUEST_RAM1_BASE, &ram_hi);
     }

hw/i386/xen/xen-hvm.c

@@ -149,12 +149,12 @@ static void xen_ram_init(PCMachineState *pcms,
          */
         block_len = (4 * GiB) + x86ms->above_4g_mem_size;
     }
-    memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
+    memory_region_init_ram(&xen_memory, NULL, "xen.ram", block_len,
                            &error_fatal);
-    *ram_memory_p = &ram_memory;
+    *ram_memory_p = &xen_memory;
 
     memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
-                             &ram_memory, 0, 0xa0000);
+                             &xen_memory, 0, 0xa0000);
     memory_region_add_subregion(sysmem, 0, &ram_640k);
     /* Skip of the VGA IO memory space, it will be registered later by the VGA
      * emulated device.
@@ -163,12 +163,12 @@ static void xen_ram_init(PCMachineState *pcms,
      * the Options ROM, so it is registered here as RAM.
      */
     memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
-                             &ram_memory, 0xc0000,
+                             &xen_memory, 0xc0000,
                              x86ms->below_4g_mem_size - 0xc0000);
     memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
     if (x86ms->above_4g_mem_size > 0) {
         memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
-                                 &ram_memory, 0x100000000ULL,
+                                 &xen_memory, 0x100000000ULL,
                                  x86ms->above_4g_mem_size);
         memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
     }

hw/xen/xen-hvm-common.c

@@ -9,7 +9,7 @@
 #include "hw/boards.h"
 #include "hw/xen/arch_hvm.h"
 
-MemoryRegion ram_memory;
+MemoryRegion xen_memory;
 
 void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
                    Error **errp)
@@ -26,7 +26,7 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
         return;
     }
 
-    if (mr == &ram_memory) {
+    if (mr == &xen_memory) {
         return;
     }
 
@@ -53,7 +53,7 @@ static void xen_set_memory(struct MemoryListener *listener,
 {
     XenIOState *state = container_of(listener, XenIOState, memory_listener);
 
-    if (section->mr == &ram_memory) {
+    if (section->mr == &xen_memory) {
         return;
     } else {
         if (add) {

include/hw/xen/xen-hvm-common.h

@@ -15,7 +15,7 @@
 #include "qemu/error-report.h"
 #include <xen/hvm/ioreq.h>
 
-extern MemoryRegion ram_memory;
+extern MemoryRegion xen_memory;
 extern MemoryListener xen_io_listener;
 extern DeviceListener xen_device_listener;