Re: [Xen-devel] [PATCH 4/4] Enable ACPI sleep in XenLinux

[Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>]

> Doing vm86 or real-mode crap in dom0 itself is obviously not on. However,
> currently Linux will only ever regurgitate Xen's original video mode. So the
> video-mode field has no real user.

We do it all the time. In the Xen case the X server falls back to
emulation for the 16bit BIOS execution.

> 
> So... The video-mode stuff is removed for now. A flags field is added to the
> platform hypercall so that something can be added later in a backwards
> compatible manner if there is an actual user for it.

Seems sensible. And as you said earlier the kernel doesn't update its
idea of video mode. The BIOS code may update the BIOS idea of video mode
but I don't see how that matters at all.

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