memory: split memory_region_from_host from qemu_ram_addr_from_host

[mirror_qemu.git] / exec.c

diff --git a/exec.c b/exec.c
index 3330e7d0afbf4db9f72e3b60774caa6f0984fb3d..7f628354097b498c1b32c1b902c7ac38042d7636 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -1897,16 +1897,16 @@ static void *qemu_ram_ptr_length(RAMBlock *ram_block, ram_addr_t addr,
  * ram_addr_t.
  */
 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
-                                   ram_addr_t *ram_addr,
                                    ram_addr_t *offset)
 {
     RAMBlock *block;
     uint8_t *host = ptr;
 
     if (xen_enabled()) {
+        ram_addr_t ram_addr;
         rcu_read_lock();
-        *ram_addr = xen_ram_addr_from_mapcache(ptr);
-        block = qemu_get_ram_block(*ram_addr);
+        ram_addr = xen_ram_addr_from_mapcache(ptr);
+        block = qemu_get_ram_block(ram_addr);
         if (block) {
             *offset = (host - block->host);
         }
@@ -1938,7 +1938,6 @@ found:
     if (round_offset) {
         *offset &= TARGET_PAGE_MASK;
     }
-    *ram_addr = block->offset + *offset;
     rcu_read_unlock();
     return block;
 }
@@ -1965,18 +1964,17 @@ RAMBlock *qemu_ram_block_by_name(const char *name)
 
 /* Some of the softmmu routines need to translate from a host pointer
    (typically a TLB entry) back to a ram offset.  */
-MemoryRegion *qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr)
+ram_addr_t qemu_ram_addr_from_host(void *ptr)
 {
     RAMBlock *block;
-    ram_addr_t offset; /* Not used */
-
-    block = qemu_ram_block_from_host(ptr, false, ram_addr, &offset);
+    ram_addr_t offset;
 
+    block = qemu_ram_block_from_host(ptr, false, &offset);
     if (!block) {
-        return NULL;
+        return RAM_ADDR_INVALID;
     }
 
-    return block->mr;
+    return block->offset + offset;
 }
 
 /* Called within RCU critical section.  */
@@ -2976,8 +2974,9 @@ void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len,
         MemoryRegion *mr;
         ram_addr_t addr1;
 
-        mr = qemu_ram_addr_from_host(buffer, &addr1);
+        mr = memory_region_from_host(buffer, &addr1);
         assert(mr != NULL);
+        addr1 += memory_region_get_ram_addr(mr);
         if (is_write) {
             invalidate_and_set_dirty(mr, addr1, access_len);
         }