[SeaBIOS] [PATCH 6/6] [workaround] cbvga_set_mode: disable clearmem

[Kevin O'Connor]

On Thu, May 31, 2018 at 08:33:53AM +0200, Gerd Hoffmann wrote:
> Break windows, memcpy_high call is problematic.
> Possibly the windows x86 emulator doesn't support int 1587.

Interesting.  I think Patrick ran into this as well.

Are there any runtime checks we could do to avoid this?  Perhaps do
something like the existing BF_EXTRA_STACK check (eg, if we get a vesa
mode call then we disable 1587 on subsequent calls).

-Kevin