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=-8.2 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_SANE_1 autolearn=ham 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 19E3FC28CBC for ; Wed, 6 May 2020 12:07:43 +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 B495920714 for ; Wed, 6 May 2020 12:07:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ftBmI/Fx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B495920714 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+infradead-linux-arm-kernel=archiver.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-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LMOBx+rnInFvlz17Kza5RB5XTLwCEPAdkY0x/3Qfxh8=; b=ftBmI/FxTWYUu8X/Fftz1J8it JC0NjW36tMP+iQlVB7/QDDmsXTNNLldqD9OOvoRmGsfixBBsF3KxMes87fFZj1cI80IEHQ3obezAk U6gW2i5aGZooDbGgRvb6mS4AVGytJ41WQc831riEeGpVirRqsanbh7TfdUmQB8FWs6FqdBM65vrLB QIgKoeKj30qz27o6CepdWF1001wG4ey5IloR/Y1mL/+0OHDkVd3Lb1IdfbgbHqlZweP5JM8v2nGUC 9ejQdlBFSfMl6S518y1D+Dy9oRH2QFiGnkHaZslDv2mzrxkT5cdqupHn0NQmfU546ktlNz6AgvyDH 4i/rPdAuw==; 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 1jWIpx-0008W2-9I; Wed, 06 May 2020 12:07:41 +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 1jWIpt-0008U1-3t; Wed, 06 May 2020 12:07:38 +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 291481FB; Wed, 6 May 2020 05:07:36 -0700 (PDT) Received: from [10.57.31.214] (unknown [10.57.31.214]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CA1EF3F71F; Wed, 6 May 2020 05:07:32 -0700 (PDT) Subject: Re: [PATCH v2 2/2] Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK' To: Will Deacon References: <1587968702-19996-1-git-send-email-amit.kachhap@arm.com> <1587968702-19996-2-git-send-email-amit.kachhap@arm.com> <20200504173440.GE1833@willie-the-truck> From: Amit Kachhap Message-ID: Date: Wed, 6 May 2020 17:37:10 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20200504173440.GE1833@willie-the-truck> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200506_050737_194465_0FD35A5D X-CRM114-Status: GOOD ( 16.83 ) 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 , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, James Morse , Vincenzo Frascino , Dave Young , linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 5/4/20 11:04 PM, Will Deacon wrote: > On Mon, Apr 27, 2020 at 11:55:02AM +0530, Amit Daniel Kachhap wrote: >> 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..5cc3ee6 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 >> +------------- >> + >> +Indicates the PAC bits mask information if Pointer Authentication is >> +enabled and address authentication feature is present. > > This is a bit cryptic. How about: > > The mask to extract the Pointer Authentication Code from a kernel virtual > address. Ok sure. I will update like this in the v3 version. Cheers, Amit Daniel > > Will > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel