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SubjectRe: [PATCH 0/2] perf: Use LBR for machine/oops debugging
Peter Zijlstra <> writes:

> The LBRs are relatively cheap to keep enabled and provide some history
> to OOPSen, also some CPUs are reported to keep them over soft-reset,
> which allows us to use them to debug things like tripple faults.
> Therefore introduce a boot option: lbr_debug=on, which always enable
> the LBRs and will print the LBRs on CPU init and die().

die is too late. they will only contain the oops code then.


-- -- Speaking for myself only.

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