memory: remove qemu_get_ram_fd, qemu_set_ram_fd, qemu_ram_block_host_ptr

Remove direct uses of ram_addr_t and optimize memory_region_{get,set}_fd
now that a MemoryRegion knows its RAMBlock directly.

Reviewed-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

include/exec/memory.h

@@ -666,6 +666,17 @@ static inline bool memory_region_is_rom(MemoryRegion *mr)
  */
 int memory_region_get_fd(MemoryRegion *mr);
 
+/**
+ * memory_region_set_fd: Mark a RAM memory region as backed by a
+ * file descriptor.
+ *
+ * This function is typically used after memory_region_init_ram_ptr().
+ *
+ * @mr: the memory region being queried.
+ * @fd: the file descriptor that backs @mr.
+ */
+void memory_region_set_fd(MemoryRegion *mr, int fd);
+
 /**
  * memory_region_get_ram_ptr: Get a pointer into a RAM memory region.
  *

include/exec/ram_addr.h

@@ -105,9 +105,6 @@ RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t max_size,
                                                     uint64_t length,
                                                     void *host),
                                     MemoryRegion *mr, Error **errp);
-int qemu_get_ram_fd(ram_addr_t addr);
-void qemu_set_ram_fd(ram_addr_t addr, int fd);
-void *qemu_get_ram_block_host_ptr(ram_addr_t addr);
 void qemu_ram_free(RAMBlock *block);
 
 int qemu_ram_resize(RAMBlock *block, ram_addr_t newsize, Error **errp);