[Qemu-devel] [PATCH 44/49] kvm: use directly cpu_physical_memory_* api for tracking dirty pages

[Juan Quintela <quintela@redhat.com>]

Performance is important in this function, and we want to optimize even further.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
---
 kvm-all.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/kvm-all.c b/kvm-all.c
index 3937754..308dfba 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -31,6 +31,7 @@
 #include "sysemu/kvm.h"
 #include "qemu/bswap.h"
 #include "exec/memory.h"
+#include "exec/ram_addr.h"
 #include "exec/address-spaces.h"
 #include "qemu/event_notifier.h"
 #include "trace.h"
@@ -382,6 +383,7 @@ static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section,
     unsigned int i, j;
     unsigned long page_number, c;
     hwaddr addr, addr1;
+    ram_addr_t ram_addr;
     unsigned int pages = int128_get64(section->size) / getpagesize();
     unsigned int len = (pages + HOST_LONG_BITS - 1) / HOST_LONG_BITS;
     unsigned long hpratio = getpagesize() / TARGET_PAGE_SIZE;
@@ -399,8 +401,9 @@ static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section,
                 page_number = (i * HOST_LONG_BITS + j) * hpratio;
                 addr1 = page_number * TARGET_PAGE_SIZE;
                 addr = section->offset_within_region + addr1;
-                memory_region_set_dirty(section->mr, addr,
-                                        TARGET_PAGE_SIZE * hpratio);
+                ram_addr = section->mr->ram_addr + addr;
+                cpu_physical_memory_set_dirty_range(ram_addr,
+                                                    TARGET_PAGE_SIZE * hpratio);
             } while (c != 0);
         }
     }
-- 
1.8.4.2