Received: by 2002:a25:868d:0:0:0:0:0 with SMTP id z13csp1859710ybk; Mon, 11 May 2020 06:09:30 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxr8NPy+6K9ffbZ4xWBKyZd+Rreqvj5IG191u3VaOzmHAogZbH+7+HPjpoTAV1//z3nnSk8 X-Received: by 2002:a50:abe3:: with SMTP id u90mr4323287edc.278.1589202570239; Mon, 11 May 2020 06:09:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1589202570; cv=none; d=google.com; s=arc-20160816; b=u7Q2UB70fHAuq3Vm+JS4czmqrnLlaXktPNtTPU8AE15kKdV5BeuTEj8XO9jYJQHdGN fB9ktSMG2tgyVTZV5r8oWR+XGW1lIIt2G7VB7UJvf01IRYaI5zIYAiWPeqsV+sCb7D9f IE8F4jnzRbAAoyJqLDOhdYi/Ta/FlA1FubjP5pbVaPCLAaaQsZhRZ+paR+li0GLlO3Aj VgzMrGJYp7UaGeOZ0TKddRLTiSvIEdLt9ZARrcCNVsZUee4QViDdiKADAPsauDnXh6Ll RP3rY6O1E5IpI8zRNy+n82T4/UHiTJURneD8mwCsFma+g2Tlg2ut3Ni7uJcpqNhajypu U7YQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=Y2qnKLPQwANi6E5/5s1zwDphqNEboxJApiF9iu0GaVk=; b=weKToE7KOk5wzIEAh7zO9LPGHfa+q5jBJKAZy14eKJj/wqQILO9D2bQ0PwIxl3tX8j mJzMXs2vmK9+ZW7ffnLNFtdfPo0Tyu9P6AqYyEYXpzY3hd/Z65H8mVGuVFvwvua7W2sL s2GyE9SXO69mdYO04wflu6zUBU8bmaUkLgDVfBYBRN/jDxg/Cet6KhJWVz5dfgitL+Yl Rh7Dts7v2d6zhuRqxh3GJcKO7Zv3CkGFejCO0D0Qx5R3iH0v6FsTEHq66rzKP8A/IqGL yuYhgtE7nUz7yHR2TjcqCFpvJy3SwWuB8lJYPaypntD4HtTs4GbIbUZg41Rm5kR0qemu pX+g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id ce21si6467250edb.297.2020.05.11.06.08.58; Mon, 11 May 2020 06:09:30 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730083AbgEKNCR (ORCPT + 99 others); Mon, 11 May 2020 09:02:17 -0400 Received: from foss.arm.com ([217.140.110.172]:60046 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726687AbgEKNCR (ORCPT ); Mon, 11 May 2020 09:02:17 -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 CC39F1045; Mon, 11 May 2020 06:02:16 -0700 (PDT) Received: from a075553-lin.blr.arm.com (a075553-lin.blr.arm.com [10.162.17.24]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 8B7D53F68F; Mon, 11 May 2020 06:02:13 -0700 (PDT) From: Amit Daniel Kachhap To: linux-arm-kernel@lists.infradead.org Cc: kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon , Bhupesh Sharma , Vincenzo Frascino , James Morse , Amit Daniel Kachhap , Mark Rutland , Dave Young , Baoquan He Subject: [PATCH v3 2/2] Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK' Date: Mon, 11 May 2020 18:31:56 +0530 Message-Id: <1589202116-18265-2-git-send-email-amit.kachhap@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1589202116-18265-1-git-send-email-amit.kachhap@arm.com> References: <1589202116-18265-1-git-send-email-amit.kachhap@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add documentation for KERNELPACMASK variable being added to the vmcoreinfo. It indicates the PAC bits mask information of signed kernel pointers if Armv8.3-A Pointer Authentication feature is present. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Rutland Cc: Dave Young Cc: Baoquan He Signed-off-by: Amit Daniel Kachhap --- Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst index 007a6b8..e4ee8b2 100644 --- a/Documentation/admin-guide/kdump/vmcoreinfo.rst +++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst @@ -393,6 +393,12 @@ KERNELOFFSET The kernel randomization offset. Used to compute the page offset. If KASLR is disabled, this value is zero. +KERNELPACMASK +------------- + +The mask to extract the Pointer Authentication Code from a kernel virtual +address. + arm === -- 2.7.4