From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To: "peterz@infradead.org" <peterz@infradead.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Poimboe, Josh" <jpoimboe@redhat.com>,
"x86@kernel.org" <x86@kernel.org>
Subject: Re: IBT related objtool warnings
Date: Thu, 7 Apr 2022 15:20:48 +0000 [thread overview]
Message-ID: <aef4052eb8c87860d71a2648fbfb1dbd894c1531.camel@intel.com> (raw)
In-Reply-To: <20220407064941.GH2731@worktop.programming.kicks-ass.net>
On Thu, 2022-04-07 at 08:49 +0200, Peter Zijlstra wrote:
> On Wed, Apr 06, 2022 at 10:43:33PM +0000, Edgecombe, Rick P wrote:
> > Hi,
> >
> > After commit:
> > ed53a0d97192 x86/alternative: Use .ibt_endbr_seal to seal indirect
> > calls
> >
> > I am getting objtool "unreachable instruction" warnings.
> >
> > On one system with gcc 8.4.0:
> > vmlinux.o: warning: objtool: start_secondary()+0x10e: unreachable
> > instruction
> >
> > On another with gcc 11.2.1:
> > vmlinux.o: warning: objtool: pvh_start_xen()+0x0: unreachable
> > instruction
>
> Could you try with tip/x86/urgent ?
I get:
vmlinux.o: warning: objtool: start_secondary()+0x10d: unreachable
instruction
next prev parent reply other threads:[~2022-04-07 15:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-06 22:43 Edgecombe, Rick P
2022-04-07 6:49 ` Peter Zijlstra
2022-04-07 15:20 ` Edgecombe, Rick P [this message]
2022-04-07 15:51 ` Peter Zijlstra
2022-04-07 16:07 ` Peter Zijlstra
2022-04-07 16:11 ` Edgecombe, Rick P
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