Bug#455909: linux-image-2,6-iop32x: many misaligned memory accesses

[maximilian attems <max@stro.at>]

On Wed, Dec 12, 2007 at 09:29:57AM -0500, Martin Guy wrote:
> Package: linux-image-2.6-iop32x
> Version: 2.6.22+11
> User: debian-arm@lists.debian.org
> Usertags: eabi
> Severity: wishlist
> 
> After running for a mere 20 hours, /proc/cpu/alignment reports
> millions of misaligned word accesses from the kernel:
> $ cat /proc/cpu/alignment
> User:           0
> System:         2765980
> Skipped:        0
> Half:           0
> Word:           2765980
> DWord:          0
> Multi:          0
> User faults:    0 (ignored)
> 
> I gather this has a performance penalty, as misaligned kernel memory
> accesses are always trapped and fixed up.
> 
> None or the other EABI kernels I am running exhibits the same behaviour:
> Angstrom's 2.6.20-rc1-h1940 reports 3 system-word alignment fixups in 30 days;
> Angstrom's 2.6.23 running Angstrom GPE reports 9 user-word fixups in 12 days
> a Debian-armel system with custom kernel reports no misalignments in 9 days.

can you please try out 2.6.23 from unstable, it installs just fine in
testing, thanks.

-- 
maks