Merge remote-tracking branch 'quintela/migration-anthony-v2' into staging

* quintela/migration-anthony-v2:
  Maintain the number of dirty pages
  dirty bitmap: abstract its use
  Exit loop if we have been there too long
  Only calculate expected_time for stage 2
  Only TCG needs TLB handling
  No need to iterate if we already are over the limit
  Add tracepoints for savevm section start/end
  Add spent time for migration
  Add migration_end function
  Add debugging infrastructure
  Add save_block_hdr function
  Add MigrationParams structure
  Add missing check for host_from_stream_offset return value for RAM_SAVE_FLAG_PAGE

1 files changed, 22 insertions, 12 deletions

diff --git a/exec.c b/exec.c
index 8244d54a85..dd4833d316 100644
--- a/exec.c
+++ b/exec.c
@@ -1824,11 +1824,29 @@ void tb_flush_jmp_cache(CPUArchState *env, target_ulong addr)
             TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
 }
 
+static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end,
+                                      uintptr_t length)
+{
+    uintptr_t start1;
+
+    /* we modify the TLB cache so that the dirty bit will be set again
+       when accessing the range */
+    start1 = (uintptr_t)qemu_safe_ram_ptr(start);
+    /* Check that we don't span multiple blocks - this breaks the
+       address comparisons below.  */
+    if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1
+            != (end - 1) - start) {
+        abort();
+    }
+    cpu_tlb_reset_dirty_all(start1, length);
+
+}
+
 /* Note: start and end must be within the same ram block.  */
 void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
                                      int dirty_flags)
 {
-    uintptr_t length, start1;
+    uintptr_t length;
 
     start &= TARGET_PAGE_MASK;
     end = TARGET_PAGE_ALIGN(end);
@@ -1838,16 +1856,9 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
         return;
     cpu_physical_memory_mask_dirty_range(start, length, dirty_flags);
 
-    /* we modify the TLB cache so that the dirty bit will be set again
-       when accessing the range */
-    start1 = (uintptr_t)qemu_safe_ram_ptr(start);
-    /* Check that we don't span multiple blocks - this breaks the
-       address comparisons below.  */
-    if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1
-            != (end - 1) - start) {
-        abort();
+    if (tcg_enabled()) {
+        tlb_reset_dirty_range_all(start, end, length);
     }
-    cpu_tlb_reset_dirty_all(start1, length);
 }
 
 int cpu_physical_memory_set_dirty_tracking(int enable)
@@ -2554,8 +2565,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
 
     ram_list.phys_dirty = g_realloc(ram_list.phys_dirty,
                                        last_ram_offset() >> TARGET_PAGE_BITS);
-    memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS),
-           0xff, size >> TARGET_PAGE_BITS);
+    cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff);
 
     if (kvm_enabled())
         kvm_setup_guest_memory(new_block->host, size);