Patchwork [V2,5/5] xen: Always set the vram dirty during migration.

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Submitter Anthony PERARD
Date July 20, 2012, 2:34 p.m.
Message ID <1342794882-30648-6-git-send-email-anthony.perard@citrix.com>
Download mbox | patch
Permalink /patch/172283/
State New
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Comments

Anthony PERARD - July 20, 2012, 2:34 p.m.
Because the call to track the dirty bit in the video ram during migration won't
work (it returns -1), we set dirtybit on the all video ram.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
 xen-all.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

Patch

diff --git a/xen-all.c b/xen-all.c
index 54e54cb..207182e 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -502,6 +502,11 @@  static void xen_sync_dirty_bitmap(XenIOState *state,
         return;
     }
 
+    if (unlikely(xen_in_migration)) {
+        /* track_dirty_vram does not work during migration */
+        memory_region_set_dirty(framebuffer, 0, size);
+        return;
+    }
     rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid,
                                  start_addr >> TARGET_PAGE_BITS, npages,
                                  bitmap);