This fixes CONFIG_FB_CIRRUS for Linux guests and probably much more:
When switching away from linearly mapped vram, we also have to restore
the I/O handlers for the LFB.
This regression was once introduced by commit
2bec46dc97.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
static void unmap_linear_vram(CirrusVGAState *s)
{
- if (s->vga.map_addr && s->vga.lfb_addr && s->vga.lfb_end)
+ if (s->vga.map_addr && s->vga.lfb_addr && s->vga.lfb_end) {
s->vga.map_addr = s->vga.map_end = 0;
-
+ cpu_register_physical_memory(s->vga.lfb_addr, s->vga.vram_size,
+ s->cirrus_linear_io_addr);
+ }
cpu_register_physical_memory(isa_mem_base + 0xa0000, 0x20000,
s->vga.vga_io_memory);
}