Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as wellas x86_32

[Guenter Roeck]

On Fri, 2010-04-09 at 14:23 -0400, H. Peter Anvin wrote:
> [Adding Guenter Roeck as he was commenting on something writing to the
> VGA area...]
> 
> On 04/09/2010 10:22 AM, Yinghai wrote:
> > 
> > then please check this one
> > 
> > update e820 at first, and later put them resource tree, but give pci BAR chance to claim
> > the range, before assign unassigned resources.
> > 
> > in case some system doesn't have VGA, and use [0xa0000, ..] for mmio of some other pci devices.
> > 
> 
> Do we have any evidence of any such system?
> 
> Either which way, the patch looks saner...
> 
Yes, we have a system which does not have VGA and uses the VGA memory
space for another device. I don't know exactly what for, but I can find
out if it is relevant.

Guenter


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