[RESEND] savevm: Reset last block info at beginning of each save

Submitted by Alex Williamson on Aug. 18, 2010, 2:02 p.m.

Details

Message ID 20100818140205.1553.97313.stgit@s20.home
State New
Headers show

Commit Message

Alex Williamson Aug. 18, 2010, 2:02 p.m.
If we save more than once we need to reset the last block info or else
only the first save has the actual block info and each subsequent save
will only use continue flags, making them unloadable independently.

Found-by: Miguel Di Ciurcio Filho <miguel.filho@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---

 arch_init.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

Comments

Glauber Costa Aug. 18, 2010, 5:07 p.m.
On Wed, Aug 18, 2010 at 08:02:10AM -0600, Alex Williamson wrote:
> If we save more than once we need to reset the last block info or else
> only the first save has the actual block info and each subsequent save
> will only use continue flags, making them unloadable independently.
> 
> Found-by: Miguel Di Ciurcio Filho <miguel.filho@gmail.com>
> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Glauber Costa <glommer@redhat.com>

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diff --git a/arch_init.c b/arch_init.c
index 47bb4b2..e0bd18c 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -104,10 +104,11 @@  static int is_dup_page(uint8_t *page, uint8_t ch)
     return 1;
 }
 
+static RAMBlock *last_block;
+static ram_addr_t last_offset;
+
 static int ram_save_block(QEMUFile *f)
 {
-    static RAMBlock *last_block = NULL;
-    static ram_addr_t last_offset = 0;
     RAMBlock *block = last_block;
     ram_addr_t offset = last_offset;
     ram_addr_t current_addr;
@@ -231,6 +232,8 @@  int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
     if (stage == 1) {
         RAMBlock *block;
         bytes_transferred = 0;
+        last_block = NULL;
+        last_offset = 0;
 
         /* Make sure all dirty bits are set */
         QLIST_FOREACH(block, &ram_list.blocks, next) {