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=-7.1 required=3.0 tests=BAYES_00,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 63527C433E2 for ; Mon, 31 Aug 2020 11:27:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 431BE20707 for ; Mon, 31 Aug 2020 11:27:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="jDIns6L2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726384AbgHaL0n (ORCPT ); Mon, 31 Aug 2020 07:26:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726948AbgHaLYW (ORCPT ); Mon, 31 Aug 2020 07:24:22 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2A0AC06123A; Mon, 31 Aug 2020 04:11:23 -0700 (PDT) Received: from zn.tnic (p200300ec2f085000329c23fffea6a903.dip0.t-ipconnect.de [IPv6:2003:ec:2f08:5000:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 747751EC02C1; Mon, 31 Aug 2020 13:11:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1598872282; 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: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=6DWUFpLyD0dihOF5P86+PovaOqwSm4uuphdxui7Xrvw=; b=jDIns6L2Fow2zYngKM/z6o3+stBkjSGWtG75dZ7oqtqaPxtxigor349Wn+PgLw4keVwjjp aGyvQWklsUrmaMPkcUNbJSsd80F8bQK6/LPR2n+OcCBSaZdvuOTAI5qxMjjzxfkNrMnbvY xet6+Btlqkzw/ZLmYY6co4sAhcafvDM= Date: Mon, 31 Aug 2020 13:11:23 +0200 From: Borislav Petkov To: Joerg Roedel Cc: x86@kernel.org, Joerg Roedel , hpa@zytor.com, Andy Lutomirski , Dave Hansen , Peter Zijlstra , Jiri Slaby , Dan Williams , Tom Lendacky , Juergen Gross , Kees Cook , David Rientjes , Cfir Cohen , Erdem Aktas , Masami Hiramatsu , Mike Stunes , Sean Christopherson , Martin Radev , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH v6 47/76] x86/dumpstack/64: Add noinstr version of get_stack_info() Message-ID: <20200831111123.GG27517@zn.tnic> References: <20200824085511.7553-1-joro@8bytes.org> <20200824085511.7553-48-joro@8bytes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200824085511.7553-48-joro@8bytes.org> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Mon, Aug 24, 2020 at 10:54:42AM +0200, Joerg Roedel wrote: > diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c > index c49cf594714b..5a85730eb0ca 100644 > --- a/arch/x86/kernel/dumpstack_64.c > +++ b/arch/x86/kernel/dumpstack_64.c > @@ -85,7 +85,7 @@ struct estack_pages estack_pages[CEA_ESTACK_PAGES] ____cacheline_aligned = { > EPAGERANGE(VC2), > }; > > -static bool in_exception_stack(unsigned long *stack, struct stack_info *info) > +static bool __always_inline in_exception_stack(unsigned long *stack, struct stack_info *info) Yeah, checkpatch seems to complain correctly here: ERROR: inline keyword should sit between storage class and type #88: FILE: arch/x86/kernel/dumpstack_64.c:88: +static bool __always_inline in_exception_stack(unsigned long *stack, struct stack_info *info) ERROR: inline keyword should sit between storage class and type #97: FILE: arch/x86/kernel/dumpstack_64.c:129: +static bool __always_inline in_irq_stack(unsigned long *stack, struct stack_info *info) > +int get_stack_info(unsigned long *stack, struct task_struct *task, > + struct stack_info *info, unsigned long *visit_mask) > +{ > + task = task ? : current; > + > + if (!stack) > + goto unknown; > + > + if (!get_stack_info_noinstr(stack, task, info)) > + goto unknown; > > -recursion_check: > /* > * Make sure we don't iterate through any given stack more than once. > * If it comes up a second time then there's something wrong going on: > @@ -196,4 +202,5 @@ int get_stack_info(unsigned long *stack, struct task_struct *task, > unknown: > info->type = STACK_TYPE_UNKNOWN; > return -EINVAL; > + ^ Superfluous newline. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette