linux-kernel - Re: vmlinux.o: warning: objtool: xen_sched_clock+0x4a: call to ftrace_likely

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Message-ID: <20230524210102.h2bbhlvujcg77wuw@treble>
Date:   Wed, 24 May 2023 14:01:02 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kernel test robot <lkp@...el.com>, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>
Subject: Re: vmlinux.o: warning: objtool: xen_sched_clock+0x4a: call to
 ftrace_likely_update() leaves .noinstr.text section

On Wed, May 24, 2023 at 04:29:54PM +0200, Peter Zijlstra wrote:
> >    vmlinux.o: warning: objtool: acpi_idle_enter+0x65: call to ftrace_likely_update() leaves .noinstr.text section
> >    vmlinux.o: warning: objtool: ibt_selftest+0x1e: return with modified stack frame
> 
> Robot folks; could you please discard all:
> 
>  ftrace_likey_update.*noinstr
> 
> warnings, they're -EWONTFIX.

Could we just make CONFIG_TRACE_BRANCH_PROFILING incompatible with
CONFIG_NOINSTR_VALIDATION?

-- 
Josh