[Xen-devel] [PATCH v4 4/6] cirrus_vga: do not reset videoram on resume

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

From: Anthony PERARD <anthony.perard@xxxxxxxxxx>

When resuming we shouldn't set the videoram to 0xff considering that we
are about to read it from the savefile.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 hw/cirrus_vga.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index f7b1d3d..eec2fc0 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -32,6 +32,7 @@
 #include "console.h"
 #include "vga_int.h"
 #include "loader.h"
+#include "sysemu.h"
 
 /*
  * TODO:
@@ -2760,9 +2761,11 @@ static void cirrus_reset(void *opaque)
     }
     s->vga.cr[0x27] = s->device_id;
 
-    /* Win2K seems to assume that the pattern buffer is at 0xff
-       initially ! */
-    memset(s->vga.vram_ptr, 0xff, s->real_vram_size);
+    if (!runstate_check(RUN_STATE_INMIGRATE)) {
+        /* Win2K seems to assume that the pattern buffer is at 0xff
+           initially ! */
+        memset(s->vga.vram_ptr, 0xff, s->real_vram_size);
+    }
 
     s->cirrus_hidden_dac_lockindex = 5;
     s->cirrus_hidden_dac_data = 0;
-- 
1.7.2.5


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