linux-kernel - Re: linux-next: Tree for Jan 5 (objtool: 3 warnings)

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Message-ID: <X/WXSVdqLsX3JE9Z@hirez.programming.kicks-ass.net>
Date:   Wed, 6 Jan 2021 11:56:09 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: linux-next: Tree for Jan 5 (objtool: 3 warnings)

On Tue, Jan 05, 2021 at 04:52:28PM -0600, Josh Poimboeuf wrote:
> On Tue, Jan 05, 2021 at 12:48:20PM -0800, Randy Dunlap wrote:
> > On 1/4/21 6:50 PM, Stephen Rothwell wrote:
> > > Hi all,
> > > 
> > > Changes since 20210104:
> > > 
> > 
> > on x86_64:
> > 
> > vmlinux.o: warning: objtool: __do_fast_syscall_32()+0x47: call to syscall_enter_from_user_mode_work() leaves .noinstr.text section
> > vmlinux.o: warning: objtool: __sev_es_nmi_complete()+0xc7: call to sev_es_wr_ghcb_msr() leaves .noinstr.text section
> > vmlinux.o: warning: objtool: lock_is_held_type()+0xb: call to lockdep_enabled() leaves .noinstr.text section
> > 
> > 
> > Full randconfig file is attached.
> 
> These look like legit noinstr warnings.  Thomas, Peter?

Aye, let me get on that.