[PATCH 4/5] drm/bochs: Use shadow buffer for bochs framebuffer console

[Noralf Trønnes]

Den 03.07.2019 10.33, skrev Thomas Zimmermann:
> The bochs driver (and virtual hardware) requires buffer objects to
> reside in video ram to display them to the screen. So it can not
> display the framebuffer console because the respective buffer object
> is permanently pinned in system memory.
> 
> Using a shadow buffer for the console solves this problem. The console
> emulation will pin the buffer object only during updates from the shadow
> buffer. Otherwise, the bochs driver can freely relocated the buffer
> between system memory and video ram.
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> ---

Acked-by: Noralf Trønnes <noralf at tronnes.org>