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=-8.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED 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 82B0CC43387 for ; Sat, 22 Dec 2018 10:25:38 +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 0751B219FD for ; Sat, 22 Dec 2018 10:25:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0751B219FD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au 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 43MM8H5DDHzDqwn for ; Sat, 22 Dec 2018 21:25:35 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43MLSh5PTtzDqX9 for ; Sat, 22 Dec 2018 20:54:44 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 43MLSh41XRz9sPF; Sat, 22 Dec 2018 20:54:44 +1100 (AEDT) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: 76a5eaa38b15dda92cd6964248c39b5a6f3a4e9d X-Patchwork-Hint: ignore In-Reply-To: <1544623390-18710-2-git-send-email-diana.craciun@nxp.com> To: Diana Craciun , linuxppc-dev@lists.ozlabs.org From: Michael Ellerman Subject: Re: [01/11] powerpc/fsl: Add infrastructure to fixup branch predictor flush Message-Id: <43MLSh41XRz9sPF@ozlabs.org> Date: Sat, 22 Dec 2018 20:54:44 +1100 (AEDT) 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: Diana Craciun Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, 2018-12-12 at 14:03:00 UTC, Diana Craciun wrote: > In order to protect against speculation attacks (Spectre > variant 2) on NXP PowerPC platforms, the branch predictor > should be flushed when the privillege level is changed. > This patch is adding the infrastructure to fixup at runtime > the code sections that are performing the branch predictor flush > depending on a boot arg parameter which is added later in a > separate patch. > > Signed-off-by: Diana Craciun Series applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/76a5eaa38b15dda92cd6964248c39b cheers