[haiku-development] Re: Virtual 8086 mode support
- From: "François Revol" <revol@xxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sun, 20 Apr 2008 01:35:23 +0200 CEST
> > But what is missing to call the VESA bios is the ability to mmap
> > 0xA000--0xFFFF
> > physically into the address space of the team. Don't know if this
> > is
> > aready
> > possible...
>
> I guess you mean identity mapped, right? It should be possible to do
> this by mapping the memory in the kernel via map_physical_memory(),
> and
> then clone that area in userland using B_EXACT_ADDRESS.
>
Right, though we can also just do it from a kernel thread from a
driver, as we don't really use it appart from vesa...
Unless we want to play with virtualization stuff but vm86 is probably
deprecated for that anyway.
François.
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