Re: [BUG sparc64] 2.6.16-git6 broke X11 on Ultra5 with ATI Mach64

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Hi,

On Jul 5, 2006, at 11:07 PM, Ludovic Courtès wrote:

2 days, 9 hours, 28 minutes, 40 seconds ago, Mikael Pettersson wrote:
In 2.6.17 sparc64 kernels, X11 runs _extremely_ slowly with
frequent lock-up like behaviour on my Ultra5 (ATI Mach64).

I finally managed to trace the cause to this change in 2.6.16-git6:

Can you be more specific as to which version of Xorg you are using?

Several people including me have reported being unable to run Xorg 7.0
on ATI-based sparc64 machines such as U5s [0]. Symptoms include kernel hangs as well as transient [1,2] or permanent [3] filesystem corruptions.

I just recompiled a kernel with your patch and it doesn't make any
difference in that respect (besides, re-adding the
`prot = __pgprot(...)' line looks questionable since the input value of
PROT becomes unused as a result).

Xorg 6.9, OTOH, was apparently working fine for most people.

Xorg 7.0 works for me on said U5 and U30 just fine ("distribution" is
T2 - http://www.t2-project.org).

When I'm back in the office (abroad right now) I can patch X to mmap
as advised by David.

Yours,

--
Rene Rebe - Rubensstr. 64 - 12157 Berlin (Europe / Germany)
http://exactcode.de | http://t2-project.org | http:// rebe.name
           +49 (0)30 / 255 897 45


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