Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 13 Aug 2019 16:02:17 +0200 (CEST) | From | Miroslav Benes <> | Subject | Re: [PATCH] s390/livepatch: Implement reliable stack tracing for the consistency model |
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On Sun, 28 Jul 2019, Josh Poimboeuf wrote:
> On Wed, Jul 17, 2019 at 01:01:27PM +0200, Miroslav Benes wrote: > > > On a related note, do you think it would be feasible to extend (in > > > another patchset) the reliable stack unwinding code a bit so that we > > > could feed it pre-baked stacks ... then we could verify that the code > > > was finding interesting scenarios. That was a passing thought I had > > > back when Nicolai and I were debugging the ppc64le exception frame > > > marker bug, but didn't think it worth the time/effort at the time. > > > > That is an interesting thought. It would help the testing a lot. I will > > make a note in my todo list. > > Another idea I had for reliable unwinder testing: add a > CONFIG_RELIABLE_STACKTRACE_DEBUG option which does a periodic stack > trace and warns if it doesn't reach the end. It could triggered from a > periodic NMI, or from schedule().
Noted as well.
Miroslav
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