Re: patch to get latest XFree 4.0 snapshot (xf3918) to work on pp cwithr128

On Fri, 10 Mar 2000, Kevin B. Hendricks wrote:

Hi,

So Xfree 4.0 final is out but without the very last minute cache flushing
changes Kostas made.

So we should probably get some official patch out there that includes a few
elements:

  What do you mean by official ? The next xfree86 update will have
this fix what more official do you suggest ?

1. Either:
       - user defined cache line size during compile
   or:
       - flush a cache range in address increments of 8

to handle the variable line cache size

  Glibc assumes a line size of 16 so that will be ok, in any
case the cache flush will be used only in the startup of the
xserver not need to worry about a few extra instructions there
so we can live even with 4byte increments, definitely better than
a compile time option.

2. And something to figure out if we are on a 601 machine in the
NuBus X100 machines to properly do a "sync or eieio" so that XFree86 4.0
cache flushing and synchronization for io has some chance of working under
MkLinux R1.

David can you tell me how the 601 problems with sync and eieio are
detected and handled in user space apps under MkLinux?

   Hmm i don't think that xfree86 4.0 will work under mklinux, there
aren't any drivers that will work under mk anymore (xpmac is gone and
the vgahw/fbdev based ones won't work).

Thanks,

Kevin

  Kostas


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