From patchwork Mon May 11 13:01:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Daniel Kachhap X-Patchwork-Id: 11540659 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2604B81 for ; Mon, 11 May 2020 13:02:39 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 F0CC720736 for ; Mon, 11 May 2020 13:02:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="pbZeInVJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F0CC720736 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=n5CpM9kaxLdspSVTkU8Nj4wwDhX3T6ZK+a9xc3IsOqg=; b=pbZeInVJxxuO5Lc2u4m9hu8ygv PjEWiQfxN8zBGLLaNxqD9jA6MaByV2xzKy8si1CZhnwVbuvpitOLyBaBW8FMrxyC4fzUdPuqNk/3t u0qd85Am4M8SrOGkHA9RpSGJPKQ4K3dfO0AzPV/nmo9yf9KAxJtotEOXcKdsFeM9d95W2uF5WQeD6 riBbXExy3eivYKzEc5TsuSS8SiSklHwO7gWy0DJ64TlRHt/nALgJfiOSpzw+bjdRVSM9H3EuUG8P5 3Bk4MfBYFo9M5FS5+HTTuDV1eoM2Td5wDTJc7AhgYwUl4fhG4r/dsZc6YzlsnROIvG81iDOHe7i3V B1mKtlNA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jY84p-0006Cp-SJ; Mon, 11 May 2020 13:02:35 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jY84X-0005vZ-6u; Mon, 11 May 2020 13:02:18 +0000 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 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200511_060217_305609_5D4923A3 X-CRM114-Status: UNSURE ( 8.58 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Baoquan He , Catalin Marinas , Bhupesh Sharma , Dave Young , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, James Morse , Amit Daniel Kachhap , Vincenzo Frascino , Will Deacon MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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 ===