From patchwork Thu May 6 01:40:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuan Yao X-Patchwork-Id: 12241469 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 666FEC433ED for ; Thu, 6 May 2021 01:44:06 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 1B96D613B4 for ; Thu, 6 May 2021 01:44:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1B96D613B4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53728 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1leT3d-0006PP-9F for qemu-devel@archiver.kernel.org; Wed, 05 May 2021 21:44:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56126) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1leT0m-0002Y3-Cc for qemu-devel@nongnu.org; Wed, 05 May 2021 21:41:08 -0400 Received: from mga05.intel.com ([192.55.52.43]:61826) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1leT0k-0007Xn-LX for qemu-devel@nongnu.org; Wed, 05 May 2021 21:41:08 -0400 IronPort-SDR: cBA71HVk7kOjUm9X509FxykwkbqiqLXCgzbckssNk6cKd9IqLLNqBGwhlFqtXWpPTz54Tq779+ uUckk05Y6qOQ== X-IronPort-AV: E=McAfee;i="6200,9189,9975"; a="283783521" X-IronPort-AV: E=Sophos;i="5.82,276,1613462400"; d="scan'208";a="283783521" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2021 18:41:02 -0700 IronPort-SDR: gHpi7Qln+3G46fad71umHSqklKdUAnUOZATJGR5cUpLHIvB9k7Vq5oB08oueKINbpSYtqNJZ6J G8XX0TzS1N2w== X-IronPort-AV: E=Sophos;i="5.82,276,1613462400"; d="scan'208";a="469220304" Received: from yy-desk-7060.sh.intel.com ([10.239.159.38]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2021 18:40:46 -0700 From: Yuan Yao To: pbonzini@redhat.com Subject: [RFC][PATCH v1 01/10] Extend the MemTxAttrs to include a 'debug' flag. The flag can be used as general indicator that operation was triggered by the debugger. Date: Thu, 6 May 2021 09:40:28 +0800 Message-Id: <20210506014037.11982-2-yuan.yao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210506014037.11982-1-yuan.yao@linux.intel.com> References: <20210506014037.11982-1-yuan.yao@linux.intel.com> Received-SPF: none client-ip=192.55.52.43; envelope-from=yuan.yao@linux.intel.com; helo=mga05.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: isaku.yamahata@intel.com, Thomas.Lendacky@amd.com, ashish.kalra@amd.com, brijesh.singh@amd.com, ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, mtosatti@redhat.com, armbru@redhat.com, qemu-devel@nongnu.org, yuan.yao@intel.com, dgilbert@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Brijesh Singh A subsequent patch will set the debug=1 when issuing a memory access from the gdbstub or HMP commands. This is a prerequisite to support debugging an encrypted guest. When a request with debug=1 is seen, the encryption APIs will be used to access the guest memory. Signed-off-by: Brijesh Singh Signed-off-by: Ashish Kalra diff --git a/include/exec/memattrs.h b/include/exec/memattrs.h index 95f2d20d55..c8b56389d6 100644 --- a/include/exec/memattrs.h +++ b/include/exec/memattrs.h @@ -49,6 +49,8 @@ typedef struct MemTxAttrs { unsigned int target_tlb_bit0 : 1; unsigned int target_tlb_bit1 : 1; unsigned int target_tlb_bit2 : 1; + /* Memory access request from the debugger */ + unsigned int debug:1; } MemTxAttrs; /* Bus masters which don't specify any attributes will get this,