From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1425302AbeE1Pyf (ORCPT ); Mon, 28 May 2018 11:54:35 -0400 Received: from mx2.suse.de ([195.135.220.15]:44268 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1425224AbeE1PyP (ORCPT ); Mon, 28 May 2018 11:54:15 -0400 From: Michal Suchanek To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Michal Suchanek , Mauricio Faria de Oliveira , Nicholas Piggin , Michael Neuling , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH] powerpc/64s: Enhance the information in cpu_show_spectre_v1() Date: Mon, 28 May 2018 15:19:14 +0200 Message-Id: <20180528131914.32231-1-msuchanek@suse.de> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20180424041559.32410-1-mpe@ellerman.id.au> References: <20180424041559.32410-1-mpe@ellerman.id.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We now have barrier_nospec as mitigation so print it in cpu_show_spectre_v1 when enabled. Signed-off-by: Michal Suchanek --- arch/powerpc/kernel/security.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index 0239383c7e4d..a0c32d53980b 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -120,7 +120,10 @@ ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, c if (!security_ftr_enabled(SEC_FTR_BNDS_CHK_SPEC_BAR)) return sprintf(buf, "Not affected\n"); - return sprintf(buf, "Vulnerable\n"); + if (barrier_nospec_enabled) + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); + else + return sprintf(buf, "Vulnerable\n"); } ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, char *buf) -- 2.13.6