Mailinglist Archive: opensuse-amd64 (299 mails)

["Steven A. DuChene" <linux-clusters@xxxxxxxxxxxxxx>]

Great, but what about the same fixes for the 2.6 kernels?

On Mon, Jan 19, 2004 at 04:58:04PM -0600, mark.langsdorf@xxxxxxx wrote:
> The 2P Opteron based Tyan 2885 K8W has some problems
> with AGP/openGL graphics performance when using
> nVidia graphics cards under Linux.  AMD, Tyan, and
> nVidia  have been working together to develop fixes
> for the problems.  Four problems have been resolved 
> for the Tyan 2885 design.
> 
> The first issue was the inabilty of the Linux kernel
> to find the AMD-8151 AGP Tunnel.  The AMD-8151 AGP 
> controller is not at the normal PCI address, and the 
> Linux kernel had to be modified to account for the 
> change.  SUSE Linux kernels starting with 
> k_smp-2.4.21-139 include the change.  The two 
> attached patches (tyan_agp.generic.patch and 
> tyan_agp.RHEL3.patch) fix the problem for most kernels 
> and for the Red Hat 2.4.21-4EL kernels, respectively.
> 
> The second issue was a misallocation of MTRRs in the
> Tyan BIOS that prevented the nVidia driver from 
> correctly caching the AGP aperture.  Tyan fixed this
> with the 2885101i.ROM (1.01i) BIOS, available at 
> ftp://ftp.tyan.com/bios_beta/2885101i.zip.
> 
> The third issue involved the nVidia 10-4499 graphics
> driver.  nVidia has corrected the problems exposed 
> by the updated AGP and BIOS code and released the
> 10-5332 driver to their website on January 20th.
> 
> The final issue involved the Linux kernel MTRR code.
> A patch that fixes the problem is attached to this
> message (mtrr.patch).  It has not been included in
> any production kernels at this time.
> 
> These four updates, taken together, allow the 2885
> to provide excellent 3D performance under Linux.
> 
> AMD would like to thank all those who contributed to
> defining, debugging, and verifying this problem.
> 
> Mark Langsdorf
> Team Lead, Linux Device Drivers
> Advanced Micro Devices       
> mark.langsdorf@xxxxxxx
> 
> 

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-- 
Steven A. DuChene     linux-clusters@xxxxxxxxxxxxxx
                      sduchene@xxxxxxxxxxxxxx