linux-kernel - Re: [PATCH 0/4] objtool,perf: Use shared x86 insn decoder

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Message-ID: <20190830193109.p7jagidsrahoa4pn@treble>
Date:   Fri, 30 Aug 2019 14:31:09 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: Re: [PATCH 0/4] objtool,perf: Use shared x86 insn decoder

On Fri, Aug 30, 2019 at 04:00:58PM -0300, Arnaldo Carvalho de Melo wrote:
> I.e. we need to make sure that it always gets the x86 stuff, not
> something that is tied to the host arch, with the patch below we get it
> to work, please take a look.
> 
> Probably this should go to the master copy, i.e. to the kernel sources,
> no?
> 
> That or we'll have to ask the check-headers.sh and objtool sync-check
> (hey, this should be unified, each project could provide just the list
> of things it uses, but I digress) to ignore those lines...
> 
> I.e. we want to decode intel_PT traces on other arches, ditto for
> CoreSight (not affected here, but similar concept).
> 
> will kick the full container build process now.

Interesting, I didn't realize other arches would be using it.  The patch
looks good to me.

Ideally there wouldn't be any differences between the headers, but if
that's unavoidable then I guess we can just use the same 'diff -I' trick
we were using before in the check script(s).

-- 
Josh