[Qemu-devel] [PATCH] vga: Mark VBE area as reserved in e820 tables

[Alex Williamson]

Otherwise the guest might try to use the range for device hotplug.

Signed-off-by: Alex Williamson <address@hidden>
---

 hw/vga.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/hw/vga.c b/hw/vga.c
index 966185e..90f9dc0 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -2331,6 +2331,14 @@ void vga_init(VGACommonState *s)
 void vga_init_vbe(VGACommonState *s)
 {
 #ifdef CONFIG_BOCHS_VBE
+#if defined (TARGET_I386)
+    if (e820_add_entry(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
+                       VGA_RAM_SIZE, E820_RESERVED) < 0) {
+        fprintf(stderr,
+                "Warning: unable to register VBE range as e820 reserved\n");
+    }
+#endif
+
     /* XXX: use optimized standard vga accesses */
     cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
                                  VGA_RAM_SIZE, s->vram_offset);