xf86-video-vesa: Changes to 'no-virt-shadow'

[GitLab Mirror]

New branch 'no-virt-shadow' available with the following commits:
commit 583cd769fd8d116fedcbba38db3a8666213f8568
Author: Adam Jackson <ajax at redhat.com>
Date:   Wed May 30 11:46:46 2018 -0400

    Disable shadow by default on known-virtual GPUs
    
    Device memory is the same domain as host memory, in this case, so the
    shadow just introduces more memcpy.
    
    Signed-off-by: Adam Jackson <ajax at redhat.com>