netdev - Re: [PATCH 2/9] objtool: Fix ORC unwinding in non-JIT BPF generated code

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Message-ID: <20190614073536.d3xkhwhq3fuivwt5@ast-mbp.dhcp.thefacebook.com>
Date:   Fri, 14 Jun 2019 00:35:38 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Josh Poimboeuf <jpoimboe@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, Song Liu <songliubraving@...com>,
        Kairui Song <kasong@...hat.com>
Subject: Re: [PATCH 2/9] objtool: Fix ORC unwinding in non-JIT BPF generated
 code

On Fri, Jun 14, 2019 at 09:08:52AM +0200, Peter Zijlstra wrote:
> On Thu, Jun 13, 2019 at 08:20:30PM -0500, Josh Poimboeuf wrote:
> > On Thu, Jun 13, 2019 at 01:57:11PM -0700, Alexei Starovoitov wrote:
> 
> > > and to patches 8 and 9.
> > 
> > Well, it's your code, but ... can I ask why?  AT&T syntax is the
> > standard for Linux, which is in fact the OS we are developing for.
> 
> I agree, all assembly in Linux is AT&T, adding Intel notation only
> serves to cause confusion.

It's not assembly. It's C code that generates binary and here
we're talking about comments.
I'm sure you're not proposing to do:
/* mov src, dst */
#define EMIT_mov(DST, SRC)                                                               \
right?
bpf_jit_comp.c stays as-is. Enough of it.