lkml.org 
[lkml]   [2003]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Virtual alias cache coherency results (was: x86, ARM, PARISC, PPC, MIPS and Sparc folks please run this)
Russell King wrote:
> Maybe those StrongARM chips don't exhibit the write buffer bug? Remember,
> I said _SOME_ StrongARM-110 chips exhibit the problem. I did not say
> _ALL_ StrongARM-110 chips exhibit the problem.

I never assumed they all have the bug. Credit me with at least
reading what you wrote before! :)

The results indicate some StrongARM-110 systems which _don't_ exhibit
the write buffer bug _do_ exhibit some _other_ cause of non-coherence.

> > It means that your VIVT explanation and workaround does not explain
> > those results, so I cannot have confidence that your workaround fixes
> > those particular ARM devices.
>
> Well, as far as I'm concerned, I completely believe that I have explained
> it entirely, and I still don't know why you're trying to make this more
> difficult than it factually is.

I'm thinking the same of you! :)

All I asked is whether _all_ ARMs appear coherent to userspace now, and
you replied with:

> It's relatively simple, and I'm not sure why its causing such
> misunderstanding. Let me try one more time:

and proceeding to answer a different question to the one I asked.

So, neither of us knows if all ARMs appear coherent to userspace, with
the latest kernel, ...

> Well, once you collect the kernel information and forward it to me, I
> can have a look.

...until we learn what kernel versions the Netwinder folks are
running, or they kindly run the test on a new kernel.

Thanks,
-- Jamie
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:48    [W:0.977 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site