From patchwork Mon Oct 14 12:32:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 176240 Delivered-To: patch@linaro.org Received: by 2002:ac9:3c86:0:0:0:0:0 with SMTP id w6csp4427393ocf; Mon, 14 Oct 2019 05:33:04 -0700 (PDT) X-Google-Smtp-Source: APXvYqygB73P/qSMPh7SG2OYiVPf2tInnKRyLDDq1ceZJifkHBOuAKVY3hWc9ew/hHn77vnPn9ZQ X-Received: by 2002:a17:906:11d8:: with SMTP id o24mr28477857eja.224.1571056384152; Mon, 14 Oct 2019 05:33:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1571056384; cv=none; d=google.com; s=arc-20160816; b=swBhFpebrMphRX7DEf7IiKliCsa71FrQD2Auz02RZDzUVmtM8M6THH6ReQEtO2NHZC DcrIHaJG+kKtiMj0Sb6GoWq3d0aCF01kEL8ntpDe92btjVYX12TcWLqxVX/WihOhIDRM SpUECvqSOcXiYsKZdps49mAsFU+Es38hOq8tKVJE9v0bm5MaiR27koVhgbyhsEE4OqCj fPDAiskAsEQh341PfwmqrsK1Ar1N/831zlVFt1GTiAfjV3dUbJwCpQ6jgMlosqk5Qu7X sfjGAb0SQ/VF4NdrIUIacAQ5JADM6ztwRTd2f9TajiVcAu6b72UgHGMKKvZKa+ENgkZ7 wX8w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=DYnY8ptr54uPFxuBjsPgcxgeX5ebFFhrKvlypZRirWc=; b=1CC0OGaxPvEeOP5WXCUUvWVAoq+gmOeLIRfQieN3QssEUMjZ+KX1e5Ey579mf/6I+q A2Kry7BAfPYUs+U9B4RVaKDZ1hohKvmJEeOi09aAX1uqc1b8Tt4vzy9lKT7Yb9qgI/f2 rNxZEHUz9OkBrFWMZe/6tXSg4cIMntNbVR/idUyj/sXVboOYvLXxNG2UgnFHTNlOIxRJ HjPKZw6JI19sH0oLWTQV3+i2/z/jXCaXHTBJGPPTCEg0tCdI3tTifTWBtJWkiXNvJeQ+ +Zvl4L1EwKoPyEqFctQfNeieRIHqLobn7cjPevstGzRRKdewh7b1L8L2bp9jmzhwNpC5 5Ybw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of stable-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id m17si11931868ejn.237.2019.10.14.05.33.03; Mon, 14 Oct 2019 05:33:04 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of stable-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of stable-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730570AbfJNMdA (ORCPT + 13 others); Mon, 14 Oct 2019 08:33:00 -0400 Received: from foss.arm.com ([217.140.110.172]:42546 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730394AbfJNMdA (ORCPT ); Mon, 14 Oct 2019 08:33:00 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B47DC337; Mon, 14 Oct 2019 05:32:59 -0700 (PDT) Received: from dawn-kernel.cambridge.arm.com (unknown [10.1.197.116]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 8D66A3F68E; Mon, 14 Oct 2019 05:32:58 -0700 (PDT) From: Suzuki K Poulose To: stable@vger.kernel.org Cc: suzuki.poulose@arm.com, gregkh@linuxfoundation.org, will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com, maz@kernel.org, linux-arm-kernel@lists.infradead.org Subject: [stable-4.4][PATCH 0/2] arm64: cpufeature: Fix truncating a feature value Date: Mon, 14 Oct 2019 13:32:52 +0100 Message-Id: <20191014123254.22002-1-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This series fixes the issue with arm64_ftr_value() where the signed fields are truncated to unsigned values corrupting the system wide safe values. Suzuki K Poulose (2): arm64: capabilities: Handle sign of the feature bit arm64: Rename cpuid_feature field extract routines arch/arm64/include/asm/cpufeature.h | 29 +++++++++++++++--------- arch/arm64/kernel/cpufeature.c | 35 ++++++++++++++++------------- arch/arm64/kernel/debug-monitors.c | 2 +- arch/arm64/kvm/sys_regs.c | 2 +- arch/arm64/mm/context.c | 3 ++- 5 files changed, 42 insertions(+), 29 deletions(-) -- 2.21.0