diff mbox series

[v2,6/9] softmmu/memory: Pass ram_flags into memory_region_init_ram_shared_nomigrate()

Message ID 20210305101634.10745-7-david@redhat.com
State New
Headers show
Series RAM_NORESERVE, MAP_NORESERVE and hostmem "reserve" property | expand

Commit Message

David Hildenbrand March 5, 2021, 10:16 a.m. UTC
Let's forward ram_flags instead, renaming
memory_region_init_ram_shared_nomigrate() into
memory_region_init_ram_flags_nomigrate(). Forward flags to
qemu_ram_alloc() and qemu_ram_alloc_internal().

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 backends/hostmem-ram.c                        |  6 +++--
 hw/m68k/next-cube.c                           |  4 ++--
 include/exec/memory.h                         | 24 +++++++++----------
 include/exec/ram_addr.h                       |  2 +-
 .../memory-region-housekeeping.cocci          |  8 +++----
 softmmu/memory.c                              | 20 ++++++++--------
 softmmu/physmem.c                             | 24 ++++++++-----------
 7 files changed, 43 insertions(+), 45 deletions(-)
diff mbox series

Patch

diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c
index 5cc53e76c9..741e701062 100644
--- a/backends/hostmem-ram.c
+++ b/backends/hostmem-ram.c
@@ -19,6 +19,7 @@ 
 static void
 ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
 {
+    uint32_t ram_flags;
     char *name;
 
     if (!backend->size) {
@@ -27,8 +28,9 @@  ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
     }
 
     name = host_memory_backend_get_name(backend);
-    memory_region_init_ram_shared_nomigrate(&backend->mr, OBJECT(backend), name,
-                           backend->size, backend->share, errp);
+    ram_flags = backend->share ? RAM_SHARED : 0;
+    memory_region_init_ram_flags_nomigrate(&backend->mr, OBJECT(backend), name,
+                                           backend->size, ram_flags, errp);
     g_free(name);
 }
 
diff --git a/hw/m68k/next-cube.c b/hw/m68k/next-cube.c
index 92b45d760f..59ccae0d5e 100644
--- a/hw/m68k/next-cube.c
+++ b/hw/m68k/next-cube.c
@@ -986,8 +986,8 @@  static void next_cube_init(MachineState *machine)
     sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 1, 0x02100000);
 
     /* BMAP memory */
-    memory_region_init_ram_shared_nomigrate(bmapm1, NULL, "next.bmapmem", 64,
-                                            true, &error_fatal);
+    memory_region_init_ram_flags_nomigrate(bmapm1, NULL, "next.bmapmem", 64,
+                                           RAM_SHARED, &error_fatal);
     memory_region_add_subregion(sysmem, 0x020c0000, bmapm1);
     /* The Rev_2.5_v66.bin firmware accesses it at 0x820c0020, too */
     memory_region_init_alias(bmapm2, NULL, "next.bmapmem2", bmapm1, 0x0, 64);
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 14004de685..2d97bdf59c 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -904,27 +904,27 @@  void memory_region_init_ram_nomigrate(MemoryRegion *mr,
                                       Error **errp);
 
 /**
- * memory_region_init_ram_shared_nomigrate:  Initialize RAM memory region.
- *                                           Accesses into the region will
- *                                           modify memory directly.
+ * memory_region_init_ram_flags_nomigrate:  Initialize RAM memory region.
+ *                                          Accesses into the region will
+ *                                          modify memory directly.
  *
  * @mr: the #MemoryRegion to be initialized.
  * @owner: the object that tracks the region's reference count
  * @name: Region name, becomes part of RAMBlock name used in migration stream
  *        must be unique within any device
  * @size: size of the region.
- * @share: allow remapping RAM to different addresses
+ * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED.
  * @errp: pointer to Error*, to store an error if it happens.
  *
- * Note that this function is similar to memory_region_init_ram_nomigrate.
- * The only difference is part of the RAM region can be remapped.
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
  */
-void memory_region_init_ram_shared_nomigrate(MemoryRegion *mr,
-                                             struct Object *owner,
-                                             const char *name,
-                                             uint64_t size,
-                                             bool share,
-                                             Error **errp);
+void memory_region_init_ram_flags_nomigrate(MemoryRegion *mr,
+                                            struct Object *owner,
+                                            const char *name,
+                                            uint64_t size,
+                                            uint32_t ram_flags,
+                                            Error **errp);
 
 /**
  * memory_region_init_resizeable_ram:  Initialize memory region with resizeable
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
index a7e3378340..6d4513f8e2 100644
--- a/include/exec/ram_addr.h
+++ b/include/exec/ram_addr.h
@@ -122,7 +122,7 @@  RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
 
 RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
                                   MemoryRegion *mr, Error **errp);
-RAMBlock *qemu_ram_alloc(ram_addr_t size, bool share, MemoryRegion *mr,
+RAMBlock *qemu_ram_alloc(ram_addr_t size, uint32_t ram_flags, MemoryRegion *mr,
                          Error **errp);
 RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t max_size,
                                     void (*resized)(const char*,
diff --git a/scripts/coccinelle/memory-region-housekeeping.cocci b/scripts/coccinelle/memory-region-housekeeping.cocci
index c768d8140a..29651ebde9 100644
--- a/scripts/coccinelle/memory-region-housekeeping.cocci
+++ b/scripts/coccinelle/memory-region-housekeeping.cocci
@@ -127,8 +127,8 @@  static void device_fn(DeviceState *dev, ...)
 - memory_region_init_rom(E1, NULL, E2, E3, E4);
 + memory_region_init_rom(E1, obj, E2, E3, E4);
 |
-- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
-+ memory_region_init_ram_shared_nomigrate(E1, obj, E2, E3, E4, E5);
+- memory_region_init_ram_flags_nomigrate(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_ram_flags_nomigrate(E1, obj, E2, E3, E4, E5);
 )
   ...+>
 }
@@ -152,8 +152,8 @@  static void device_fn(DeviceState *dev, ...)
 - memory_region_init_rom(E1, NULL, E2, E3, E4);
 + memory_region_init_rom(E1, OBJECT(dev), E2, E3, E4);
 |
-- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
-+ memory_region_init_ram_shared_nomigrate(E1, OBJECT(dev), E2, E3, E4, E5);
+- memory_region_init_ram_flags_nomigrate(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_ram_flags_nomigrate(E1, OBJECT(dev), E2, E3, E4, E5);
 )
   ...+>
 }
diff --git a/softmmu/memory.c b/softmmu/memory.c
index 9f67c6c23c..03bf13a5e7 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -1532,22 +1532,22 @@  void memory_region_init_ram_nomigrate(MemoryRegion *mr,
                                       uint64_t size,
                                       Error **errp)
 {
-    memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
+    memory_region_init_ram_flags_nomigrate(mr, owner, name, size, 0, errp);
 }
 
-void memory_region_init_ram_shared_nomigrate(MemoryRegion *mr,
-                                             Object *owner,
-                                             const char *name,
-                                             uint64_t size,
-                                             bool share,
-                                             Error **errp)
+void memory_region_init_ram_flags_nomigrate(MemoryRegion *mr,
+                                            Object *owner,
+                                            const char *name,
+                                            uint64_t size,
+                                            uint32_t ram_flags,
+                                            Error **errp)
 {
     Error *err = NULL;
     memory_region_init(mr, owner, name, size);
     mr->ram = true;
     mr->terminates = true;
     mr->destructor = memory_region_destructor_ram;
-    mr->ram_block = qemu_ram_alloc(size, share, mr, &err);
+    mr->ram_block = qemu_ram_alloc(size, ram_flags, mr, &err);
     if (err) {
         mr->size = int128_zero();
         object_unparent(OBJECT(mr));
@@ -1683,7 +1683,7 @@  void memory_region_init_rom_nomigrate(MemoryRegion *mr,
                                       uint64_t size,
                                       Error **errp)
 {
-    memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
+    memory_region_init_ram_flags_nomigrate(mr, owner, name, size, 0, errp);
     mr->readonly = true;
 }
 
@@ -1703,7 +1703,7 @@  void memory_region_init_rom_device_nomigrate(MemoryRegion *mr,
     mr->terminates = true;
     mr->rom_device = true;
     mr->destructor = memory_region_destructor_ram;
-    mr->ram_block = qemu_ram_alloc(size, false,  mr, &err);
+    mr->ram_block = qemu_ram_alloc(size, 0, mr, &err);
     if (err) {
         mr->size = int128_zero();
         object_unparent(OBJECT(mr));
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 62ea4abbdd..58ac4bffe2 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -2108,12 +2108,14 @@  RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
                                   void (*resized)(const char*,
                                                   uint64_t length,
                                                   void *host),
-                                  void *host, bool resizeable, bool share,
+                                  void *host, uint32_t ram_flags,
                                   MemoryRegion *mr, Error **errp)
 {
     RAMBlock *new_block;
     Error *local_err = NULL;
 
+    assert((ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE)) == 0);
+
     size = HOST_PAGE_ALIGN(size);
     max_size = HOST_PAGE_ALIGN(max_size);
     new_block = g_malloc0(sizeof(*new_block));
@@ -2125,15 +2127,10 @@  RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
     new_block->fd = -1;
     new_block->page_size = qemu_real_host_page_size;
     new_block->host = host;
+    new_block->flags = ram_flags;
     if (host) {
         new_block->flags |= RAM_PREALLOC;
     }
-    if (share) {
-        new_block->flags |= RAM_SHARED;
-    }
-    if (resizeable) {
-        new_block->flags |= RAM_RESIZEABLE;
-    }
     ram_block_add(new_block, &local_err);
     if (local_err) {
         g_free(new_block);
@@ -2146,15 +2143,14 @@  RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
 RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
                                    MemoryRegion *mr, Error **errp)
 {
-    return qemu_ram_alloc_internal(size, size, NULL, host, false,
-                                   false, mr, errp);
+    return qemu_ram_alloc_internal(size, size, NULL, host, 0, mr, errp);
 }
 
-RAMBlock *qemu_ram_alloc(ram_addr_t size, bool share,
+RAMBlock *qemu_ram_alloc(ram_addr_t size, uint32_t ram_flags,
                          MemoryRegion *mr, Error **errp)
 {
-    return qemu_ram_alloc_internal(size, size, NULL, NULL, false,
-                                   share, mr, errp);
+    assert((ram_flags & ~RAM_SHARED) == 0);
+    return qemu_ram_alloc_internal(size, size, NULL, NULL, ram_flags, mr, errp);
 }
 
 RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t maxsz,
@@ -2163,8 +2159,8 @@  RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t maxsz,
                                                      void *host),
                                      MemoryRegion *mr, Error **errp)
 {
-    return qemu_ram_alloc_internal(size, maxsz, resized, NULL, true,
-                                   false, mr, errp);
+    return qemu_ram_alloc_internal(size, maxsz, resized, NULL,
+                                   RAM_RESIZEABLE, mr, errp);
 }
 
 static void reclaim_ramblock(RAMBlock *block)