linux-kernel - Re: [PATCH 4/4] objtool: Fix function fallthrough detection for vmlinux

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Message-ID: <20220419155204.dpinfcxm5xburyig@treble>
Date:   Tue, 19 Apr 2022 08:52:04 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     x86@...nel.org
Cc:     Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] objtool: Fix function fallthrough detection for
 vmlinux

On Mon, Apr 11, 2022 at 04:10:32PM -0700, Josh Poimboeuf wrote:
> Objtool's function fallthrough detection only works on C objects.
> The distinction between C and assembly objects no longer makes sense
> with objtool running on vmlinux.o.
> 
> Now that copy_user_64.S has been fixed up, and an objtool sibling call
> detection bug has been fixed, the asm code is in "compliance" and this
> hack is no longer needed.  Remove it.
> 
> Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>

Fixes: ed53a0d97192 ("x86/alternative: Use .ibt_endbr_seal to seal indirect calls")

-- 
Josh