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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 DF033CA9ED3 for ; Mon, 4 Nov 2019 22:00:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA65121744 for ; Mon, 4 Nov 2019 22:00:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572904836; bh=bhnUTGAyaAASV4EfOnbQFrdIhxipFt4vC9r7havsXp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=l/VXGR/8eQSZvWseDWllgBD7I9Hc/8Pw/KG03GJOBLR7JAroIgbyKM0xkLqjYvrHR /uyWzxdWI4YJ2AkiQVE24iwLNYuwOqh+4bDd0QZddOvt4L+JLlDOesyDbdKAhqnSt1 A///YJ11ejmIgbXGn7fz0dujZAMBdg8poGtLAinw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388111AbfKDWAf (ORCPT ); Mon, 4 Nov 2019 17:00:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:58184 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388870AbfKDWAc (ORCPT ); Mon, 4 Nov 2019 17:00:32 -0500 Received: from localhost (6.204-14-84.ripe.coltfrance.com [84.14.204.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 38223214D8; Mon, 4 Nov 2019 22:00:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572904831; bh=bhnUTGAyaAASV4EfOnbQFrdIhxipFt4vC9r7havsXp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ECzfxEJL+bhSizwVlBxoXdT5KHgnLOAw9VycAfcRp3FE+GmesHt2Ewfluv1HWcJ2J o1WV5zifoRImfGyAZXcT94WNRCNErg830UptsOEyBnR5gKIGjrTCM8/utm9RdKumyc sHlpT4euEiXe5AUPKdNAP3nVeygAOl+Q6I5nVAWQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hanjun Guo , John Garry , Zhangshaokun , Catalin Marinas , Sasha Levin Subject: [PATCH 4.19 044/149] arm64: kpti: Whitelist HiSilicon Taishan v110 CPUs Date: Mon, 4 Nov 2019 22:43:57 +0100 Message-Id: <20191104212139.138086779@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191104212126.090054740@linuxfoundation.org> References: <20191104212126.090054740@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hanjun Guo [ Upstream commit 0ecc471a2cb7d4d386089445a727f47b59dc9b6e ] HiSilicon Taishan v110 CPUs didn't implement CSV3 field of the ID_AA64PFR0_EL1 and are not susceptible to Meltdown, so whitelist the MIDR in kpti_safe_list[] table. Signed-off-by: Hanjun Guo Reviewed-by: John Garry Reviewed-by: Zhangshaokun Signed-off-by: Catalin Marinas Signed-off-by: Sasha Levin --- arch/arm64/kernel/cpufeature.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index ff5beb59b3dc3..220ebfa0ece6e 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -906,6 +906,7 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry, MIDR_ALL_VERSIONS(MIDR_CORTEX_A57), MIDR_ALL_VERSIONS(MIDR_CORTEX_A72), MIDR_ALL_VERSIONS(MIDR_CORTEX_A73), + MIDR_ALL_VERSIONS(MIDR_HISI_TSV110), { /* sentinel */ } }; char const *str = "kpti command line option"; -- 2.20.1