diff options
Diffstat (limited to 'qemu/roms/seabios/vgasrc/vgabios.c')
| -rw-r--r-- | qemu/roms/seabios/vgasrc/vgabios.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/qemu/roms/seabios/vgasrc/vgabios.c b/qemu/roms/seabios/vgasrc/vgabios.c index 4aa50e1c1..f07e85bd3 100644 --- a/qemu/roms/seabios/vgasrc/vgabios.c +++ b/qemu/roms/seabios/vgasrc/vgabios.c @@ -304,6 +304,12 @@ vga_set_mode(int mode, int flags) SET_BDA(video_mode, 0xff); SET_BDA_EXT(vbe_mode, mode | (flags & MF_VBEFLAGS)); SET_BDA_EXT(vgamode_offset, (u32)vmode_g); + if (CONFIG_VGA_ALLOCATE_EXTRA_STACK) + // Disable extra stack if it appears a modern OS is in use. + // This works around bugs in some versions of Windows (Vista + // and possibly later) when the stack is in the e-segment. + MASK_BDA_EXT(flags, BF_EXTRA_STACK + , (flags & MF_LEGACY) ? BF_EXTRA_STACK : 0); if (memmodel == MM_TEXT) { SET_BDA(video_cols, width); SET_BDA(video_rows, height-1); |