[Qemu-devel] [PATCH 1/5] re-register whole area upon lfb unmap.

[Glauber Costa <glommer@redhat.com>]

set phys_offset correctly for the whole vga area when unmapping linear vram
(for vga optimization). We first register the old pieces as unassigned
memory, to make things easier for kvm (and possibly other slot based
implementations in the future). Replacing the region directly would
make the slot management significantly more complex.

Signed-off-by: Glauber Costa <glommer@redhat.com>
---
 hw/cirrus_vga.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index 83c5f40..6e81906 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -2658,8 +2658,10 @@ static void map_linear_vram(CirrusVGAState *s)
         vga_dirty_log_start((VGAState *)s);
     }
     else {
-        cpu_register_physical_memory(isa_mem_base + 0xa0000, 0x8000, s->vga_io_memory);
-        cpu_register_physical_memory(isa_mem_base + 0xa8000, 0x8000, s->vga_io_memory);
+        cpu_register_physical_memory(isa_mem_base + 0xa0000, 0x8000, IO_MEM_UNASSIGNED);
+        cpu_register_physical_memory(isa_mem_base + 0xa8000, 0x8000, IO_MEM_UNASSIGNED);
+
+        cpu_register_physical_memory(isa_mem_base + 0xa0000, 0x20000, s->vga_io_memory);
     }
 
 }
-- 
1.5.6.5