From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: [PATCH RFC 1/5] cpu/speculation: Add 'cpu_spec_mitigations=' cmdline options Date: Wed, 10 Apr 2019 10:30:28 +0200 Message-ID: <20190410083028.GA26580@zn.tnic> References: <20190405131211.GE23348@zn.tnic> <20190405142048.burthk2jnpcvi2om@treble> <20190405152059.GG23348@zn.tnic> <20190405160136.GI23348@zn.tnic> <20190405161852.nmpk22omgiety4df@treble> <87sguqwgu7.fsf@concordia.ellerman.id.au> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <87sguqwgu7.fsf@concordia.ellerman.id.au> Sender: linux-kernel-owner@vger.kernel.org To: Michael Ellerman Cc: Josh Poimboeuf , linux-kernel@vger.kernel.org, x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Jiri Kosina , Waiman Long , Andrea Arcangeli , Jon Masters , Benjamin Herrenschmidt , Paul Mackerras , linuxppc-dev@lists.ozlabs.org, Martin Schwidefsky , Heiko Carstens , linux-s390@vger.kernel.org, Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.orglin List-Id: linux-arch.vger.kernel.org On Wed, Apr 10, 2019 at 03:48:48PM +1000, Michael Ellerman wrote: > What about when we have a mitigation for a non-speculation related bug :) Like that is *ever* going to happen... :-P -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.skyhub.de ([5.9.137.197]:41774 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729024AbfDJIak (ORCPT ); Wed, 10 Apr 2019 04:30:40 -0400 Date: Wed, 10 Apr 2019 10:30:28 +0200 From: Borislav Petkov Subject: Re: [PATCH RFC 1/5] cpu/speculation: Add 'cpu_spec_mitigations=' cmdline options Message-ID: <20190410083028.GA26580@zn.tnic> References: <20190405131211.GE23348@zn.tnic> <20190405142048.burthk2jnpcvi2om@treble> <20190405152059.GG23348@zn.tnic> <20190405160136.GI23348@zn.tnic> <20190405161852.nmpk22omgiety4df@treble> <87sguqwgu7.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <87sguqwgu7.fsf@concordia.ellerman.id.au> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Michael Ellerman Cc: Josh Poimboeuf , linux-kernel@vger.kernel.org, x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Jiri Kosina , Waiman Long , Andrea Arcangeli , Jon Masters , Benjamin Herrenschmidt , Paul Mackerras , linuxppc-dev@lists.ozlabs.org, Martin Schwidefsky , Heiko Carstens , linux-s390@vger.kernel.org, Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org, Greg Kroah-Hartman , Tyler Hicks , Linus Torvalds Message-ID: <20190410083028.ADTcEbu9LjkLlhHMW--fPfzgueu18WOODjp3reNM5dk@z> On Wed, Apr 10, 2019 at 03:48:48PM +1000, Michael Ellerman wrote: > What about when we have a mitigation for a non-speculation related bug :) Like that is *ever* going to happen... :-P -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. 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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable 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 74817C10F14 for ; Wed, 10 Apr 2019 08:32:43 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E31162075B for ; Wed, 10 Apr 2019 08:32:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="QNQeCv8+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E31162075B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 44fHTh6JRKzDqNs for ; Wed, 10 Apr 2019 18:32:40 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=alien8.de (client-ip=2a01:4f8:190:11c2::b:1457; helo=mail.skyhub.de; envelope-from=bp@alien8.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=alien8.de header.i=@alien8.de header.b="QNQeCv8+"; dkim-atps=neutral Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 44fHRT4CKwzDqCp for ; Wed, 10 Apr 2019 18:30:44 +1000 (AEST) Received: from zn.tnic (p200300EC2F0CAE00250718ACA0948A5F.dip0.t-ipconnect.de [IPv6:2003:ec:2f0c:ae00:2507:18ac:a094:8a5f]) (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 F32DE1EC0104; Wed, 10 Apr 2019 10:30:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1554885038; 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=EIC5GXnIG2iCyk2VAYJWzHuCmDmx3AVARo96r1FOl20=; b=QNQeCv8+MS08A9oLKOmFuZOF7Qmw/bgZrSRuhP6OjAv2LDa7JZCcfZW5BJ0ajmuKg8I/02 lYriF60V41Fm0zsEahSipILOCskx/vhQ0ya6LvEskc11ipbzKk08vM9ju8IOy9x2iM7DRX dJP4jI4e2UOAv4kHWJnOlnoZgAxrwiM= Date: Wed, 10 Apr 2019 10:30:28 +0200 From: Borislav Petkov To: Michael Ellerman Subject: Re: [PATCH RFC 1/5] cpu/speculation: Add 'cpu_spec_mitigations=' cmdline options Message-ID: <20190410083028.GA26580@zn.tnic> References: <20190405131211.GE23348@zn.tnic> <20190405142048.burthk2jnpcvi2om@treble> <20190405152059.GG23348@zn.tnic> <20190405160136.GI23348@zn.tnic> <20190405161852.nmpk22omgiety4df@treble> <87sguqwgu7.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <87sguqwgu7.fsf@concordia.ellerman.id.au> User-Agent: Mutt/1.10.1 (2018-07-13) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Zijlstra , Heiko Carstens , Paul Mackerras , "H . Peter Anvin" , Ingo Molnar , Andrea Arcangeli , linux-s390@vger.kernel.org, x86@kernel.org, Will Deacon , Linus Torvalds , Catalin Marinas , Waiman Long , linux-arch@vger.kernel.org, Jon Masters , Jiri Kosina , Andy Lutomirski , Josh Poimboeuf , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Tyler Hicks , Martin Schwidefsky , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, Apr 10, 2019 at 03:48:48PM +1000, Michael Ellerman wrote: > What about when we have a mitigation for a non-speculation related bug :) Like that is *ever* going to happen... :-P -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Zijlstra , Benjamin Herrenschmidt , Heiko Carstens , Paul Mackerras , "H . Peter Anvin" , Ingo Molnar , Andrea Arcangeli , linux-s390@vger.kernel.org, x86@kernel.org, Will Deacon , Linus Torvalds , Catalin Marinas , Waiman Long , linux-arch@vger.kernel.org, Jon Masters , Jiri Kosina , Andy Lutomirski , Josh Poimboeuf , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Tyler Hicks , Martin Schwidefsky , linuxppc-dev@lists.ozlabs.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Apr 10, 2019 at 03:48:48PM +1000, Michael Ellerman wrote: > What about when we have a mitigation for a non-speculation related bug :) Like that is *ever* going to happen... :-P -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel