Re: [PATCH v3 00/10] x86: ORC unwinder (previously undwarf)

From: Andi Kleen
Date: Wed Jul 12 2017 - 18:30:42 EST

Josh Poimboeuf <jpoimboe@xxxxxxxxxx> writes:
> The ORC data format does have a few downsides compared to DWARF. The
> ORC unwind tables take up ~1MB more memory than DWARF eh_frame tables.
Can we have an option to just use dwarf instead? For people
who don't want to waste a MB+ to solve a problem that doesn't
exist (as proven by many years of opensuse kernel experience)

As far as I can tell this whole thing has only downsides compared
to the dwarf unwinder that was earlier proposed. I don't see
a single advantage.