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authorJuan Quintela <quintela@redhat.com>2013-11-05 15:52:54 +0100
committerJuan Quintela <quintela@redhat.com>2014-01-13 14:04:55 +0100
commit5ff7fb77b3cee8e26648e4fdccb23a77c2a6d3c6 (patch)
tree25d52129ce3f7a666a3f4ddf5be726845c3f7513 /kvm-all.c
parentc9dd46fc0d64d9f314aa3c220d4aff9d01ab778e (diff)
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memory: move bitmap synchronization to its own function
We want to have all the functions that handle directly the dirty bitmap near. We will change it later. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Diffstat (limited to 'kvm-all.c')
-rw-r--r--kvm-all.c27
1 files changed, 2 insertions, 25 deletions
diff --git a/kvm-all.c b/kvm-all.c
index cb62ba4..0bfb060 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -380,33 +380,10 @@ static int kvm_set_migration_log(int enable)
static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section,
unsigned long *bitmap)
{
- unsigned int i, j;
- unsigned long page_number, c;
- hwaddr addr;
ram_addr_t start = section->offset_within_region + section->mr->ram_addr;
- 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;
+ ram_addr_t pages = int128_get64(section->size) / getpagesize();
- /*
- * bitmap-traveling is faster than memory-traveling (for addr...)
- * especially when most of the memory is not dirty.
- */
- for (i = 0; i < len; i++) {
- if (bitmap[i] != 0) {
- c = leul_to_cpu(bitmap[i]);
- do {
- j = ffsl(c) - 1;
- c &= ~(1ul << j);
- page_number = (i * HOST_LONG_BITS + j) * hpratio;
- addr = page_number * TARGET_PAGE_SIZE;
- ram_addr = start + addr;
- cpu_physical_memory_set_dirty_range(ram_addr,
- TARGET_PAGE_SIZE * hpratio);
- } while (c != 0);
- }
- }
+ cpu_physical_memory_set_dirty_lebitmap(bitmap, start, pages);
return 0;
}