From: Borislav Petkov <bp@alien8.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>,
x86@kernel.org, pjt@google.com, mbenes@suze.cz, jgross@suse.com,
linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 6/6] objtool,x86: Rewrite retpoline thunk calls
Date: Sat, 20 Feb 2021 01:39:20 +0100 [thread overview]
Message-ID: <20210220003920.GG26778@zn.tnic> (raw)
In-Reply-To: <20210219220158.GD59023@worktop.programming.kicks-ass.net>
On Fri, Feb 19, 2021 at 11:01:58PM +0100, Peter Zijlstra wrote:
> We could, but it so happens Joerg is also wanting negative features.
Juergen.
> So I was thikning that perhaps we can convince Boris they're not
> really all that aweful after all :-)
Well, I'm not crazy about this, TBH - I totally agree with Josh:
"with objtool generating code, it's going to be a maze to figure out
where the generated code is coming from"
and without a real good reason to do this, what's the point? I know,
because we can. :-)
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-02-20 0:40 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-19 20:43 [RFC][PATCH 0/6] objtool: Optimize !retpoline Peter Zijlstra
2021-02-19 20:43 ` [RFC][PATCH 1/6] objtool: Correctly handle retpoline thunk calls Peter Zijlstra
2021-02-19 20:43 ` [RFC][PATCH 2/6] objtool: Fix static_call list generation Peter Zijlstra
2021-02-19 20:43 ` [RFC][PATCH 3/6] objtool: Rework rebuild_reloc logic Peter Zijlstra
2021-02-19 20:43 ` [RFC][PATCH 4/6] objtool: Add elf_create_undef_symbol() Peter Zijlstra
2021-02-19 20:43 ` [RFC][PATCH 5/6] objtool: Allow archs to rewrite retpolines Peter Zijlstra
2021-02-19 20:43 ` [RFC][PATCH 6/6] objtool,x86: Rewrite retpoline thunk calls Peter Zijlstra
2021-02-19 21:55 ` Josh Poimboeuf
2021-02-19 22:01 ` Peter Zijlstra
2021-02-20 0:39 ` Borislav Petkov [this message]
2021-02-20 16:48 ` Peter Zijlstra
2021-02-20 17:41 ` Borislav Petkov
2021-02-20 22:28 ` Peter Zijlstra
2021-02-20 22:51 ` Peter Zijlstra
2021-02-21 9:54 ` Borislav Petkov
2021-02-20 22:32 ` Peter Zijlstra
2021-02-21 5:45 ` Jürgen Groß
2021-02-21 9:44 ` Borislav Petkov
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