Messages in this thread | | | Date | Tue, 20 Mar 2007 12:12:29 -0400 | From | Chuck Ebbert <> | Subject | Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable |
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Eric W. Biederman wrote:
> I'm conflicted about the dwarf unwinder. I was off doing other things > at the time so I missed the pain, but I do have a distinct recollection of > the back traces on x86_64 being distinctly worse the on i386. Lately > I haven't seen that so it may be I was misinterpreting what I was > seeing, and the compiler optimizations were what gave me such weird > back traces. >
Well, if you compile x86_64 with frame pointers it helps a bit because the compiler doesn't tail merge function calls. But the stack backtrace ignores the frame pointers even if they're present, unlike i386 which will use them.
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