From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97C77C54FCB for ; Mon, 20 Apr 2020 15:53:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 78107206DD for ; Mon, 20 Apr 2020 15:53:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="HnKzPHbi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729144AbgDTPxk (ORCPT ); Mon, 20 Apr 2020 11:53:40 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:47211 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725875AbgDTPxk (ORCPT ); Mon, 20 Apr 2020 11:53:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587398019; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=RiIH4zglO3RPAXeHMoIlaUTnxrbObtFWcUuFZVIVitc=; b=HnKzPHbiVmk52+Tlqo97aC95EEB3yeL15BVtsm1Pgi2mjg6SiffrTV82C29Iw3JwzNe9/C GABhrBNuUC1FSUPyz+31N69BosK7pPZHtuSWVaiuGeyMKO1mYZBcyjQvifUEeW/P1fyhVi eCR7tsZpR9BgCf9TRCKu/DLFHmCBljo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-154-8hLN_HPPOQ281RkBFtXdsA-1; Mon, 20 Apr 2020 11:53:35 -0400 X-MC-Unique: 8hLN_HPPOQ281RkBFtXdsA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 151EE107ACC9; Mon, 20 Apr 2020 15:53:34 +0000 (UTC) Received: from treble (ovpn-116-8.rdu2.redhat.com [10.10.116.8]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9AF0B5C1B2; Mon, 20 Apr 2020 15:53:32 +0000 (UTC) Date: Mon, 20 Apr 2020 10:53:30 -0500 From: Josh Poimboeuf To: Randy Dunlap Cc: Stephen Rothwell , Linux Next Mailing List , Linux Kernel Mailing List , Peter Zijlstra Subject: Re: linux-next: Tree for Apr 20 (objtool warning) Message-ID: <20200420155330.5uepjeyfsso5l4rm@treble> References: <20200420142610.390e5922@canb.auug.org.au> <30d5a881-95fe-9f98-a899-2c955c5eb2c1@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <30d5a881-95fe-9f98-a899-2c955c5eb2c1@infradead.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 20, 2020 at 08:29:04AM -0700, Randy Dunlap wrote: > On 4/19/20 9:26 PM, Stephen Rothwell wrote: > > Hi all, > > > > Changes since 20200417: > > > > on x86_64: > > arch/x86/kvm/svm/vmenter.o: warning: objtool: __svm_vcpu_run()+0xe4: BP used as a scratch register > > Full randconfig file is included. Yeah, frame pointers are toast in that function. We'll need something like: diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile index a789759b7261..221e2bd7e76d 100644 --- a/arch/x86/kvm/Makefile +++ b/arch/x86/kvm/Makefile @@ -3,6 +3,10 @@ ccflags-y += -Iarch/x86/kvm ccflags-$(CONFIG_KVM_WERROR) += -Werror +ifeq ($(CONFIG_UNWINDER_FRAME_POINTER),y) +OBJECT_FILES_NON_STANDARD_vmenter.o := y +endif + KVM := ../../../virt/kvm kvm-y += $(KVM)/kvm_main.o $(KVM)/coalesced_mmio.o \