Re: Xorg, xf86EnableIO() and the VESA driver

[Samuel Thibault]

Jérémie Koenig, le Sat 13 Mar 2010 02:37:36 +0100, a écrit :
> On Fri, Mar 12, 2010 at 8:29 PM, Samuel Thibault
> <samuel.thibault@gnu.org> wrote:
> > Jérémie Koenig, le Fri 12 Mar 2010 19:54:31 +0100, a écrit :
> >> The vesa driver works on Linux, but gains access to the io ports
> >> through iopl(3),
> >
> > Ah, right, it does both... At first read I thought it was doing iopl()
> > only if ioperm fails().
> 
> I think you're right, but apparently ioperm fails at least in my
> setting (the manual page seems to indicate it can only be used for the
> first 0x400 ports on Linux).

Yes, but that's precisely what Xorg uses :)

Samuel