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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_NEOMUTT 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 B6865C10F13 for ; Tue, 16 Apr 2019 20:21:39 +0000 (UTC) Received: from bombadil.infradead.org (unknown [198.137.202.133]) (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 8A0C320663 for ; Tue, 16 Apr 2019 20:21:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Bm5+MtYF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8A0C320663 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=L5Juhsyjx+rFaDQ8n+W7+hTRvxIuQclvOAIRFzIrjE0=; b=Bm5+MtYFpw13O3 3iPNMnJlr6V8j9DD+tZAynWoAfKmRXLC4RICRuQ8PV9tikA850paQkHzuHGIiaLc+QUwf9Ik667K6 Bevn1/mhfbnEErYoi0SxyM6xEkTLmpnLJmqkW7h6gVBQpGfzHYZkyVX8M1VJkcqVa4P+8qgmJ2gly aLt1GMuEPhEAc9rnpKroQ4kIXfDeP5MtGnNJ4p1fvIGK6abDsKhR61d1TrlrPUIuurI48ZMbFgVXE uZZV9gAUaNB8q4ZrIWl/kUY9QiY9ev1D3FUd/k692+6Zkb0ySh2VPz8SjYQX/gBpdWItiEPr5XOMm E5F81zVsRryt8wsAdsiA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hGUa4-0007tG-ID; Tue, 16 Apr 2019 20:21:24 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hGUa2-0007so-0O for linux-arm-kernel@lists.infradead.org; Tue, 16 Apr 2019 20:21:23 +0000 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BA64830821BF; Tue, 16 Apr 2019 20:21:20 +0000 (UTC) Received: from treble (ovpn-124-46.rdu2.redhat.com [10.10.124.46]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 33B3A5C1B4; Tue, 16 Apr 2019 20:21:12 +0000 (UTC) Date: Tue, 16 Apr 2019 15:21:11 -0500 From: Josh Poimboeuf To: Thomas Gleixner Subject: Re: [PATCH v2 5/5] arm64/speculation: Support 'mitigations=' cmdline option Message-ID: <20190416202111.2gq5yg5hiqgv7sbj@treble> References: <24039e1370ed57e8075730c0b88c505afd9e0ab7.1555085500.git.jpoimboe@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.47]); Tue, 16 Apr 2019 20:21:21 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190416_132122_067015_652EDB61 X-CRM114-Status: GOOD ( 15.43 ) 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, Michael Ellerman , x86@kernel.org, Will Deacon , Steven Price , Linus Torvalds , Catalin Marinas , Waiman Long , linux-arch@vger.kernel.org, Jon Masters , Jiri Kosina , Borislav Petkov , Andy Lutomirski , linux-arm-kernel@lists.infradead.org, Phil Auld , Greg Kroah-Hartman , Randy Dunlap , 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 Tue, Apr 16, 2019 at 09:26:13PM +0200, Thomas Gleixner wrote: > On Fri, 12 Apr 2019, Josh Poimboeuf wrote: > > > Configure arm64 runtime CPU speculation bug mitigations in accordance > > with the 'mitigations=' cmdline option. This affects Meltdown, Spectre > > v2, and Speculative Store Bypass. > > > > The default behavior is unchanged. > > > > Signed-off-by: Josh Poimboeuf > > --- > > NOTE: This is based on top of Jeremy Linton's patches: > > https://lkml.kernel.org/r/20190410231237.52506-1-jeremy.linton@arm.com > > So I keep that out and we have to revisit that once the ARM64 stuff hits a > tree, right? I can have a branch with just the 4 first patches applied > which ARM64 folks can pull in when they apply Jeremy's patches before te > merge window. Sounds good to me (though I guess it's up to the arm64 maintainers how they want to handle the dependencies). -- Josh _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel