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From Greg Ames <>
Subject Re: Tweaking for Alpha..
Date Fri, 14 Dec 2001 16:57:34 GMT
Rodent of Unusual Size wrote:
> These showed up in my kernel log from a build of HEAD


> on RH Linux 6.2 on Alpha, using GCC egcs-2.91.66.  (This
> is the first build I've done on this platform for a
> long time, so I don't think this is a new issue.)
> Dec 13 17:10:03 kernel: httpd(21879): unaligned trap at 00000200012dcd00: 000003ffff9fdadc
2d 0
> Dec 13 17:10:05 kernel: httpd(21922): unaligned trap at 00000200012dcd00: 000003ffff9fdadc
2d 0

> I'm pretty sure these are wicked expensive in terms of things
> like the instruction cache..  

Well, yeah.  

Doesn't Solaris on SPARC generate SIGBUS for unaligned operands, without
trying to accomodate them?  If so, they would tend to get fixed
quickly.  I wonder if this is something that is aligned on SPARC but not
on Alpha.


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