kernel paging + io space?

[Bibek Sahu <scorpio dodds net>]

	While working on the ggi kernel stuff, I've run into a little
problem working in the ggi stuff.  The kernel's trying to page address
0xa000000, which is actually the address of the framebuffer of my video
card.

	I admit that I'm not very knowledgeable on memory setup /
architecture.  However, it would _seem_ to me that the kernel shouldn't
try to be paging things in i/o space.  Am I crazy in thinking this?  Do I
simply have no idea what I'm talking about?  And more importantly: how
might I fix it?

Nov  6 13:52:23 prophet kernel: Matrox mga2x64 chipset driver rev $Revision: 1.9 $ loaded
Nov  6 13:52:23 prophet kernel: KGI monitor driver rev $Revision: 1.10 $
Nov  6 13:52:23 prophet kernel: TVP 3026 DAC driver rev $Revison: 1.10 $
Nov  6 13:52:23 prophet kernel: tvp3026.c:318: TVP 3026 rev 04.02 detected.
Nov  6 13:52:23 prophet kernel: tvp3026.c:335: Using 250 MHz mode
Nov  6 13:52:23 prophet kernel: TVP 3026 PLL driver rev $Revision: 1.6 $
Nov  6 13:52:23 prophet kernel: Matrox Millennium (I/II) accelerator driver rev $Revision: 1.7 $ loaded
Nov  6 13:52:23 prophet kernel: Matrox Graphics Matrox mga2x64 (I/II) driver loaded.
Nov  6 13:52:23 prophet kernel: kgifb_init: xres 640 yres 480 bpp 32 vaddr 0xa000000 paddr 0xa000000 size 1245184
Nov  6 13:52:23 prophet kernel: Unable to handle kernel paging request at virtual address 000000000a000000
Nov  6 13:52:23 prophet kernel: insmod(2659): Oops 1
Nov  6 13:52:24 prophet kernel: pc = [<fffffe0000082750>]  ra = [<fffffc00003f4b68>]  ps = 0000
Nov  6 13:52:24 prophet kernel: r0 = 000000000a000018  r1 = 0000000000000000  r2 = 0000000000000000
Nov  6 13:52:24 prophet kernel: r3 = 0000000000000000  r4 = 0000000000000000  r5 = 0000000000000000
Nov  6 13:52:24 prophet kernel: r6 = 0000000000000000  r7 = 0000000000000000  r8 = fffffc0001134000
Nov  6 13:52:24 prophet kernel: r9 = fffffc00027b2002  r10= fffffc0000485a70  r11= 0000000000000a00
Nov  6 13:52:24 prophet kernel: r12= 000000000000004f  r13= ffffffffffffffff  r14= 0000000000000910
Nov  6 13:52:24 prophet kernel: r15= 0000000000000000
Nov  6 13:52:24 prophet kernel: r16= fffffc000044c980  r17= 000000000a000000  r18= 000000000a000000
Nov  6 13:52:24 prophet kernel: r19= 000000000000000e  r20= 0000000000aaaaaa  r21= 0000000000000000
Nov  6 13:52:24 prophet kernel: r22= 0000000000000000  r23= 0000000000000000  r24= 0000000000000000
Nov  6 13:52:24 prophet kernel: r25= 0000000000000000  r27= 000000000a00001c  r28= 0000000000000000
Nov  6 13:52:24 prophet kernel: gp = fffffc00004559c8  sp = fffffc0001137c48
Nov  6 13:52:24 prophet kernel: Code: 46a20802  44340297  46a30803 <b0520000> 46a40804  46a50805  b060ffec  46a60806  b080fff0 
Nov  6 13:52:24 prophet kernel: Trace: [<fffffc00003f4b68>] [<fffffc00003d5578>] [<fffffc00003d67cc>] [<fffffc00003dbac8>] [<fffffc00003f8d70>] [<fffffc0000324fc8>] [<fffffc0000310b68>]

	And what may be of more use to people who don't have my
System.map:

pc = [<fffffe0000082750>]  ra = [<fffffc00003f4b68>]
Trace: [<fffffc00003f4b68>] [<fffffc00003d5578>] [<fffffc00003d67cc>] [<fffffc00003dbac8>] [<fffffc00003f8d70>] [<fffffc0000324fc8>] [<fffffc0000310b68>]

fffffe0000082750 = fbcon_cfb32_putcs_Reb48126d (fffffe00000825e0) [fbcon-cfb32]

fffffc00003f4b68 = fbcon_putcs (fffffc00003f4a80)
fffffc00003d5578 = update_region (fffffc00003d55c0)
fffffc00003d67cc = redraw_screen (fffffc00003d6620)
fffffc00003dbac8 = take_over_console (fffffc00003db980)
fffffc00003f8d70 = register_framebuffer (fffffc00003f8c40)
fffffc0000324fc8 = sys_init_module (fffffc0000324960)
fffffc0000310b68 = entSys (fffffc0000310ac0)

	Thanks for any and all help.  I appreciate your time.

- Bob