Re: Fwd: Patch to control VGA bus routing and active VGA device.

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

On Gwe, 2005-01-28 at 20:00, Matthew Wilcox wrote:
> Possibly a better solution (less likely to break things) would be to allow
> drivers to reserve the 10-bit aliases too.  Something like this:
> 
> static inline void request_isa_alias_regions(unsigned long start,
>                 unsigned long n, const char *name)
> {
>         int base;
>         for (base = 0x400; base < 0x10000; base += 0x400) {
>                 request_region(base + start, n, name);
>         }
> }
> 
> and then call that in drivers/video/console/vgacon.c

Almost every x86 I/O device in ISA space has this problem so it would be
better if request_region learned to take a decode mask instead of adding
another 500 entries