From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-6.0 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham autolearn_force=no version=3.4.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id 773177D089 for ; Thu, 22 Nov 2018 21:50:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407674AbeKWIbi (ORCPT ); Fri, 23 Nov 2018 03:31:38 -0500 Received: from terminus.zytor.com ([198.137.202.136]:54675 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731179AbeKWIbh (ORCPT ); Fri, 23 Nov 2018 03:31:37 -0500 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id wAMLnNlF3947609 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 22 Nov 2018 13:49:23 -0800 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id wAMLnNc63947605; Thu, 22 Nov 2018 13:49:23 -0800 Date: Thu, 22 Nov 2018 13:49:23 -0800 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Babu Moger Message-ID: Cc: brijesh.singh@amd.com, linux-doc@vger.kernel.org, gregkh@linuxfoundation.org, dwmw2@infradead.org, pombredanne@nexb.com, davem@davemloft.net, pbonzini@redhat.com, rian@alum.mit.edu, chang.seok.bae@intel.com, jpoimboe@redhat.com, puwen@hygon.cn, mingo@redhat.com, bp@suse.de, rafael@kernel.org, qianyue.zj@alibaba-inc.com, babu.moger@amd.com, hpa@zytor.com, tony.luck@intel.com, vkuznets@redhat.com, Thomas.Lendacky@amd.com, suravee.suthikulpanit@amd.com, reinette.chatre@intel.com, akpm@linux-foundation.org, fenghua.yu@intel.com, kirill.shutemov@linux.intel.com, dima@arista.com, peterz@infradead.org, tglx@linutronix.de, sherry.hurwitz@amd.com, jroedel@suse.de, Babu.Moger@amd.com, linux-kernel@vger.kernel.org, jannh@google.com, luto@kernel.org, mingo@kernel.org, xiaochen.shen@intel.com, corbet@lwn.net, arnd@arndb.de, kstewart@linuxfoundation.org, mchehab+samsung@kernel.org Reply-To: xiaochen.shen@intel.com, mingo@kernel.org, kstewart@linuxfoundation.org, mchehab+samsung@kernel.org, corbet@lwn.net, arnd@arndb.de, peterz@infradead.org, dima@arista.com, jroedel@suse.de, sherry.hurwitz@amd.com, jannh@google.com, luto@kernel.org, Babu.Moger@amd.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, fenghua.yu@intel.com, kirill.shutemov@linux.intel.com, tony.luck@intel.com, vkuznets@redhat.com, Thomas.Lendacky@amd.com, suravee.suthikulpanit@amd.com, reinette.chatre@intel.com, akpm@linux-foundation.org, qianyue.zj@alibaba-inc.com, hpa@zytor.com, babu.moger@amd.com, bp@suse.de, rafael@kernel.org, chang.seok.bae@intel.com, pbonzini@redhat.com, rian@alum.mit.edu, mingo@redhat.com, puwen@hygon.cn, jpoimboe@redhat.com, brijesh.singh@amd.com, linux-doc@vger.kernel.org, dwmw2@infradead.org, gregkh@linuxfoundation.org, davem@davemloft.net, pombredanne@nexb.com In-Reply-To: <20181121202811.4492-8-babu.moger@amd.com> References: <20181121202811.4492-8-babu.moger@amd.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/cache] x86/resctrl: Add vendor check for the MBA software controller Git-Commit-ID: 580ebb66cbb3de979adb4becbad7bd383746f162 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org Commit-ID: 580ebb66cbb3de979adb4becbad7bd383746f162 Gitweb: https://git.kernel.org/tip/580ebb66cbb3de979adb4becbad7bd383746f162 Author: Babu Moger AuthorDate: Wed, 21 Nov 2018 20:28:37 +0000 Committer: Borislav Petkov CommitDate: Thu, 22 Nov 2018 20:16:19 +0100 x86/resctrl: Add vendor check for the MBA software controller MBA software controller support is available only on Intel. Suggested-by: Fenghua Yu Signed-off-by: Babu Moger Signed-off-by: Borislav Petkov Cc: Andrew Morton Cc: Andy Lutomirski Cc: Arnd Bergmann Cc: Brijesh Singh Cc: "Chang S. Bae" Cc: David Miller Cc: David Woodhouse Cc: Dmitry Safonov Cc: Fenghua Yu Cc: Greg Kroah-Hartman Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Jann Horn Cc: Joerg Roedel Cc: Jonathan Corbet Cc: Josh Poimboeuf Cc: Kate Stewart Cc: "Kirill A. Shutemov" Cc: Cc: Mauro Carvalho Chehab Cc: Paolo Bonzini Cc: Peter Zijlstra Cc: Philippe Ombredanne Cc: Pu Wen Cc: Cc: "Rafael J. Wysocki" Cc: Reinette Chatre Cc: Rian Hunter Cc: Sherry Hurwitz Cc: Suravee Suthikulpanit Cc: Thomas Gleixner Cc: Thomas Lendacky Cc: Tony Luck Cc: Vitaly Kuznetsov Cc: Link: https://lkml.kernel.org/r/20181121202811.4492-8-babu.moger@amd.com --- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index cf159095b612..fada488069cb 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -1878,7 +1878,10 @@ static int parse_rdtgroupfs_options(char *data) if (ret) goto out; } else if (!strcmp(token, "mba_MBps")) { - ret = set_mba_sc(true); + if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) + ret = set_mba_sc(true); + else + ret = -EINVAL; if (ret) goto out; } else {