VMware VGA: Only enable dirty log tracking when fifo is disabled

This patch enables dirty log tracking whenever it's needed and disables it
when it is not.

We unconditionally enable dirty log tracking on reset, restart dirty log
tracking when PCI IO regions are remapped, and disable/enable it based on
commands from the guest.

Rebased-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/hw/vga.c b/hw/vga.c
index 5b0c55e99d..d05f1f9d19 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -1606,7 +1606,29 @@ void vga_dirty_log_start(VGACommonState *s)
         kvm_log_start(VBE_DISPI_LFB_PHYSICAL_ADDRESS, s->vram_size);
     }
 #endif
+}
+
+void vga_dirty_log_stop(VGACommonState *s)
+{
+    if (kvm_enabled() && s->map_addr)
+	kvm_log_stop(s->map_addr, s->map_end - s->map_addr);
+
+    if (kvm_enabled() && s->lfb_vram_mapped) {
+	kvm_log_stop(isa_mem_base + 0xa0000, 0x80000);
+	kvm_log_stop(isa_mem_base + 0xa8000, 0x80000);
+    }
 
+#ifdef CONFIG_BOCHS_VBE
+    if (kvm_enabled() && s->vbe_mapped) {
+	kvm_log_stop(VBE_DISPI_LFB_PHYSICAL_ADDRESS, s->vram_size);
+    }
+#endif
+}
+
+void vga_dirty_log_restart(VGACommonState *s)
+{
+    vga_dirty_log_stop(s);
+    vga_dirty_log_start(s);
 }
 
 /*