From patchwork Fri Jun 19 14:32:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 223620 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 EF54EC433E0 for ; Fri, 19 Jun 2020 16:55:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CEE6520786 for ; Fri, 19 Jun 2020 16:55:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592585700; bh=5tm4Dg00/ubgsCOtNbBlHdNQPOrTqmqY8p/BQos8OGk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=X5iV0Je8sFTwZKf4oJrzWeTBaRW9m3cxgajmk6TrywGOCo1aYD8m3FXTEOM4kz8JE HjkbiAZEFG801shxjQdDOHiT4iENTu6QXZZNZCqWl8GVaSe0p6kuiYfilI8s4SHERg ytEUKw2I/XqGO/414jGlf3MSRHPLVSxCZdHny9+w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387464AbgFSQzA (ORCPT ); Fri, 19 Jun 2020 12:55:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:52480 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387461AbgFSOgI (ORCPT ); Fri, 19 Jun 2020 10:36:08 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2A9F92070A; Fri, 19 Jun 2020 14:36:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592577367; bh=5tm4Dg00/ubgsCOtNbBlHdNQPOrTqmqY8p/BQos8OGk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XqKnitEM7O65hyxmQI3wzjAwen1yElQ9VVeANrZbKiFk1mWvDKjayHzOUO1XqOkCX 14uwxcQzn1i/yp8svXl2elaXp8GlKLBSBnSAZC9OmWNAYuXUXz4LzqCJ7p1vaue957 NXmMpshhJMNcvIsamiCLwW8VPSRMX61zXRSbU0Ts= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Waiman Long , Borislav Petkov , "H. Peter Anvin" , Andi Kleen , David Woodhouse , Ingo Molnar , Jiri Kosina , Josh Poimboeuf , KarimAllah Ahmed , Konrad Rzeszutek Wilk , Peter Zijlstra , Thomas Gleixner , Tim Chen , x86-ml , Sasha Levin Subject: [PATCH 4.4 022/101] x86/speculation: Change misspelled STIPB to STIBP Date: Fri, 19 Jun 2020 16:32:11 +0200 Message-Id: <20200619141615.260874344@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200619141614.001544111@linuxfoundation.org> References: <20200619141614.001544111@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Waiman Long [ Upstream commit aa77bfb354c495fc4361199e63fc5765b9e1e783 ] STIBP stands for Single Thread Indirect Branch Predictors. The acronym, however, can be easily mis-spelled as STIPB. It is perhaps due to the presence of another related term - IBPB (Indirect Branch Predictor Barrier). Fix the mis-spelling in the code. Signed-off-by: Waiman Long Signed-off-by: Borislav Petkov Cc: "H. Peter Anvin" Cc: Andi Kleen Cc: David Woodhouse Cc: Ingo Molnar Cc: Jiri Kosina Cc: Josh Poimboeuf Cc: KarimAllah Ahmed Cc: Konrad Rzeszutek Wilk Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Tim Chen Cc: x86-ml Link: https://lkml.kernel.org/r/1544039368-9009-1-git-send-email-longman@redhat.com Signed-off-by: Sasha Levin --- arch/x86/kernel/cpu/bugs.c | 6 +++--- arch/x86/kernel/process.h | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index 1a0ab4af93b7..9fddbdcc1874 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -59,7 +59,7 @@ static u64 x86_spec_ctrl_mask = SPEC_CTRL_IBRS; u64 x86_amd_ls_cfg_base; u64 x86_amd_ls_cfg_ssbd_mask; -/* Control conditional STIPB in switch_to() */ +/* Control conditional STIBP in switch_to() */ DEFINE_STATIC_KEY_FALSE(switch_to_cond_stibp); /* Control conditional IBPB in switch_mm() */ DEFINE_STATIC_KEY_FALSE(switch_mm_cond_ibpb); @@ -725,12 +725,12 @@ spectre_v2_user_select_mitigation(enum spectre_v2_mitigation_cmd v2_cmd) "always-on" : "conditional"); } - /* If enhanced IBRS is enabled no STIPB required */ + /* If enhanced IBRS is enabled no STIBP required */ if (spectre_v2_enabled == SPECTRE_V2_IBRS_ENHANCED) return; /* - * If SMT is not possible or STIBP is not available clear the STIPB + * If SMT is not possible or STIBP is not available clear the STIBP * mode. */ if (!smt_possible || !boot_cpu_has(X86_FEATURE_STIBP)) diff --git a/arch/x86/kernel/process.h b/arch/x86/kernel/process.h index 898e97cf6629..320ab978fb1f 100644 --- a/arch/x86/kernel/process.h +++ b/arch/x86/kernel/process.h @@ -19,7 +19,7 @@ static inline void switch_to_extra(struct task_struct *prev, if (IS_ENABLED(CONFIG_SMP)) { /* * Avoid __switch_to_xtra() invocation when conditional - * STIPB is disabled and the only different bit is + * STIBP is disabled and the only different bit is * TIF_SPEC_IB. For CONFIG_SMP=n TIF_SPEC_IB is not * in the TIF_WORK_CTXSW masks. */