Vesa drv very slow on new hardware (NVS295)

[Dave Airlie]

On Thu, Jan 20, 2011 at 9:24 PM, PETINOT Sylvain
<SYLVAIN.PETINOT at atosorigin.com> wrote:
> Hi,
>
>
>
> I just want to submit you a problem I face.
>

(II) VESA(0): VESA VBE OEM Product Rev: Chip Rev
(II) VESA(0): Splitting WC range: base: 0xf5000000, size: 0xe00000
(II) VESA(0): Splitting WC range: base: 0xf5800000, size: 0x600000
(WW) VESA(0): Failed to set up write-combining range (0xf5c00000,0x200000)
(WW) VESA(0): Failed to set up write-combining range (0xf5800000,0x600000)
(WW) VESA(0): Failed to set up write-combining range (0xf5000000,0xe00000)
(II) VESA(0): virtual address = 0xb7111000,

I'm guessing its most likely MTRR setup not working, the new
motherboard already has MTRRs probably and doesn't cover the range you
want. have a look in /proc/mtrr and dmesg on both boards.

Dave.