From: Peter Zijlstra <peterz@infradead.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Dave Hansen <dave.hansen@intel.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>,
yu-cheng.yu@intel.com
Subject: Re: [RFC][PATCH] objtool: WARN about ENDBR instructions
Date: Wed, 10 Feb 2021 18:01:07 +0100 [thread overview]
Message-ID: <YCQRU+b6b6iGGsev@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20210210160945.73n5zhlfcii5t637@treble>
On Wed, Feb 10, 2021 at 10:09:45AM -0600, Josh Poimboeuf wrote:
> On Wed, Feb 10, 2021 at 09:39:53AM +0100, Peter Zijlstra wrote:
> >
> >
> > Given all the ENDBR fun we recently had, do we want the below? Until
> > someone comes and fixes up kprobes/ftrace/livepatch etc.. having them is
> > a giant pain and we'd better warn about it.
>
> Meh...
>
> Is there a point in doing this, now that we killed it with
> -fcf-protection=none?
>
> That said, the patch is nicely small and localized.
Yeah, paranoia, just making absolutely sure it doesn't sneak back in
unexpected.
prev parent reply other threads:[~2021-02-10 17:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-10 8:39 [RFC][PATCH] objtool: WARN about ENDBR instructions Peter Zijlstra
2021-02-10 16:09 ` Josh Poimboeuf
2021-02-10 17:01 ` Peter Zijlstra [this message]
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