From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-392315-1518538290-2-5182270115263966835 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='de', MailFrom='org' X-Spam-charsets: plain='utf-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518538289; b=TFPp4NKjFklts4Oazh/Sg5+s9ZTh8hc+BmKIxdxQtT/bDq6 V6ipHqBmHUPh8PSta/PYqp3Sk72OV7pgi90orbvc0z6BjxGo/7mF6VEppBWClGIr 6YbkessGu8ah7CaA8lpuJ+S1JM28+/m3rlS66iVdom3G4CdWLLJadawqhQrqBFro E72Z4xQ2YhvdSF24Nwu/TqafmF7RgWaR4EYPaqzKat8AjOkqPYfA3+5iDTCq7zmq 4HyVVAQhTfoIz1PvMNPgnHKatLEabf3j8L1nnefQBm+tRd0L1jyAh+6XRIVGfXk4 qjvbJrWod5TGa3qQ2uHmMz+BQhWb08FBtGJ45Pw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:content-transfer-encoding :in-reply-to:sender:list-id; s=arctest; t=1518538289; bh=USE8wB5 LRW9g1aLJ5yE6B1UEOZYYjzpl8ABd75AiRww=; b=I/w/lW7eZKJwZz4zepHxgfE 2jbo5gdiS+d9I8zkoB9eKQAL2jpXhjvBAAOOT6+09Z0RvtbKEFw6LrOgJtzqWR6E 9jxpyEyBsVEcIczUcw6Kh0anf9dQ5d+6/MNiCmqfa0hVaRGu2hxevJ0eLz/mrUwK 5mVP4Mf8/etVEEVQ6/AKFEuOzEf419nOwPUq+j1YfQYWCHaKSme5be/1BXa+IlnG mlpythQG9+b8BKeW8wNb8UWp0Gu/cpjlUefqda6luBqoWgCErBLpS9K2mu85g0AU eHyT/zgsN+dCvaP5b54e4dvM6AC08LqWzpfHAwbpHiymLjEF5bGz3JtzCDVgdnA= = ARC-Authentication-Results: i=1; mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=suse.de; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=suse.de header.result=pass header_is_org_domain=yes Authentication-Results: mx3.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=suse.de; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=suse.de header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934454AbeBMQL2 (ORCPT ); Tue, 13 Feb 2018 11:11:28 -0500 Received: from mx2.suse.de ([195.135.220.15]:37875 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934405AbeBMQL1 (ORCPT ); Tue, 13 Feb 2018 11:11:27 -0500 Date: Tue, 13 Feb 2018 17:10:55 +0100 From: Borislav Petkov To: Thomas Gleixner Cc: Andi Kleen , Arjan van de Ven , Greg Kroah-Hartman , Nick Lowe , linux-kernel@vger.kernel.org, stable@vger.kernel.org, David Woodhouse , Dave Hansen , gnomes@lxorguk.ukuu.org.uk, ashok.raj@intel.com, karahmed@amazon.de, torvalds@linux-foundation.org, peterz@infradead.org, pbonzini@redhat.com, tim.c.chen@linux.intel.com Subject: Re: [PATCH 4.9 43/92] x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown Message-ID: <20180213161055.GD12578@pd.tnic> References: <20180209133931.211869118@linuxfoundation.org> <20180209133934.259299920@linuxfoundation.org> <20180213150007.GJ26982@kroah.com> <20180213155603.GK10945@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.9.3 (2018-01-21) Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Tue, Feb 13, 2018 at 05:02:59PM +0100, Thomas Gleixner wrote: > No. The table is basically excluding families <=5 and a few individual > ones. Anything newer than that should tell via ARCH_CAP_RDCL_NO and not > need any entry. It looks to me like Nick wants 4.9 to test X86_BUG_CPU_MELTDOWN in kaiser_check_boottime_disable() not X86_VENDOR_AMD. I.e., the auto disable should pay attention to the CPUs in the table like upstream. 4.9 got the kaiser backports which explains the difference. IMHO, of course. -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --