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=-10.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT 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 85A94C282CE for ; Wed, 24 Apr 2019 14:16:58 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [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 4B37F21773 for ; Wed, 24 Apr 2019 14:16:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="evqrlpiY" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4B37F21773 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.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=1irEx50FUgWxBdMTJAxvkBb4yMUMvPcMPJ8a89kv6o8=; b=evqrlpiYPn+sbB FlApwQBnuzS7SP74QBCppoa7T+o2tLtwkWqFG27pjYp8rMLAl6CDzTEjb0tgf3r0YfDEZEP3p1baH +iE6eiiCImiaxHbunKOaSFWgUfx6Y0u9/tT9m6BZiEwmXN0iFdGactvRuEk5AyYfBze2baGy/tf0d qDQs8huZsdUVdhsMkeqNtF5CutKg6fg8gOZjAzCaKlneFbkBG3k7UHGSx1bmd/Gy9jSFwtCZTS02j DbmWqfnOPYaUr1iRYOxChBR3FXzXfzWLRMQSCD8uadPG/w44higodrw5Efo+wlGx1PMW7IlGhTRz1 fJZTX70yNiWrAsIUKM2g==; 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 1hJIhe-0001Py-Av; Wed, 24 Apr 2019 14:16:50 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hJIhT-0001E7-ET for linux-arm-kernel@lists.infradead.org; Wed, 24 Apr 2019 14:16:42 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B3D5880D; Wed, 24 Apr 2019 07:16:38 -0700 (PDT) Received: from fuggles.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id F0B3A3F5AF; Wed, 24 Apr 2019 07:16:33 -0700 (PDT) Date: Wed, 24 Apr 2019 15:16:31 +0100 From: Will Deacon To: Thomas Gleixner Subject: Re: [PATCH v2 5/5] arm64/speculation: Support 'mitigations=' cmdline option Message-ID: <20190424141631.GH14829@fuggles.cambridge.arm.com> References: <24039e1370ed57e8075730c0b88c505afd9e0ab7.1555085500.git.jpoimboe@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.1+86 (6f28e57d73f2) () X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190424_071639_853514_C2DA5FF4 X-CRM114-Status: GOOD ( 14.65 ) 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, Steven Price , Linus Torvalds , Catalin Marinas , Waiman Long , linux-arch@vger.kernel.org, Jon Masters , Jiri Kosina , Borislav Petkov , Andy Lutomirski , Josh Poimboeuf , 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 Hi Thomas, 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. I'm assuming that this refers to the core/speculation branch in tip: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=core/speculation but please can you confirm that I'm good to pull that into arm64? Cheers, Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel