Messages in this thread | | | Date | Mon, 13 Aug 2007 16:21:10 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH] x86: optionally show last exception from/to register contents |
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> I though you did, but since I never saw it appear in any release, I posted > this one...
It's a little different (and somewhat hackish I admit) ftp://firstfloor.org/pub/ak/x86_64/debug/last-branch It has far more overhead than yours of course.
The only way to merge something like that would be dynamic patching and I was never quite motivated for that.
> So especially with the first concern of yours - is it worth at all rev-ing this > patch to address the other change requests you voiced?
The patch is useful even with the race, just document somewhere that it is unreliable (perhaps in the printk itself) and do the other changes.
I would also suggest to enable it by default.
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