On 10/12/2007, Ian Jackson <[EMAIL PROTECTED]> wrote: > The existing stdvga driver from xen-unstable tools/ioemu/hw/vga* does > not save the emulated VGA memory contents. The symptoms include video > malfunction after restore, including black screen (which can often be > fixed by asking the guest to redraw) but also missing font setup etc. > The attached patch fixes this by saving the entire VGA memory buffer, > just like the Xen ioemu Cirrus emulator does.
Sounds reasonable. > > I have reinterpreted the `is_vbe' byte, which is related to > CONFIG_BOCHS_VBE, as a general flags word. This enables my code to > allow old images to be restored (albeit with loss of VGA memory), by > using another bit in that word to indicate whether the VGA memory dump > is present. You can use the version_id parameter for that. Increase the value passed to register_savevm and load the vram only if version_id >= 2. Regards
