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[Qemu-devel] [PATCH 03/10] qxl: stop dirty loging when not in vga mode

From: Gerd Hoffmann
Subject: [Qemu-devel] [PATCH 03/10] qxl: stop dirty loging when not in vga mode
Date: Fri, 22 Jun 2012 11:25:11 +0200

From: Alon Levy <address@hidden>

Tested with linux guest. Not sure how to check actual performance affect
of this. Checked with the previously send traceevent that the kvm ioctl
to start/stop dirty logging is being called.

Signed-off-by: Alon Levy <address@hidden>
Signed-off-by: Gerd Hoffmann <address@hidden>
 hw/qxl.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/hw/qxl.c b/hw/qxl.c
index 8777ba9..5a7be60 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -932,6 +932,7 @@ static void qxl_enter_vga_mode(PCIQXLDevice *d)
     d->mode = QXL_MODE_VGA;
     memset(&d->ssd.dirty, 0, sizeof(d->ssd.dirty));
+    vga_dirty_log_start(&d->vga);
 static void qxl_exit_vga_mode(PCIQXLDevice *d)
@@ -940,6 +941,7 @@ static void qxl_exit_vga_mode(PCIQXLDevice *d)
+    vga_dirty_log_stop(&d->vga);
     qxl_destroy_primary(d, QXL_SYNC);

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