From patchwork Thu Dec 6 11:26:00 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Hao X-Patchwork-Id: 10715605 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2D6BB1923 for ; Thu, 6 Dec 2018 11:06:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 16F2128BFB for ; Thu, 6 Dec 2018 11:06:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0B4B22D393; Thu, 6 Dec 2018 11:06:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id DA6CF28BFB for ; Thu, 6 Dec 2018 11:06:29 +0000 (UTC) Received: from localhost ([::1]:40103 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gUrUD-0005na-1z for patchwork-qemu-devel@patchwork.kernel.org; Thu, 06 Dec 2018 06:06:29 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49997) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gUrSS-00031G-7s for qemu-devel@nongnu.org; Thu, 06 Dec 2018 06:04:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gUrSN-0000JT-V4 for qemu-devel@nongnu.org; Thu, 06 Dec 2018 06:04:40 -0500 Received: from mxhk.zte.com.cn ([63.217.80.70]:65048) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gUrSF-00009e-95; Thu, 06 Dec 2018 06:04:27 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id A04D0D15F1847A5791BB; Thu, 6 Dec 2018 19:04:15 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id wB6B41ZG072829; Thu, 6 Dec 2018 19:04:01 +0800 (GMT-8) (envelope-from peng.hao2@zte.com.cn) Received: from localhost.localdomain.localdomain ([10.74.120.59]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2018120619043367-15124414 ; Thu, 6 Dec 2018 19:04:33 +0800 From: Peng Hao To: peter.maydell@linaro.org, drjones@redhat.com, philmd@redhat.com Date: Thu, 6 Dec 2018 19:26:00 +0800 Message-Id: <1544095560-70807-6-git-send-email-peng.hao2@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1544095560-70807-1-git-send-email-peng.hao2@zte.com.cn> References: <1544095560-70807-1-git-send-email-peng.hao2@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2018-12-06 19:04:33, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2018-12-06 19:03:50, Serialize complete at 2018-12-06 19:03:50 X-MAIL: mse01.zte.com.cn wB6B41ZG072829 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 63.217.80.70 Subject: [Qemu-devel] [PATCH] pvpanic : update pvpanic document X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peng Hao , qemu-arm@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add mmio mode as a pci device support info in docs/specs/pvpanic.txt. Signed-off-by: Peng Hao --- docs/specs/pvpanic.txt | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt index c7bbacc..6d62d72 100644 --- a/docs/specs/pvpanic.txt +++ b/docs/specs/pvpanic.txt @@ -1,7 +1,7 @@ PVPANIC DEVICE ============== -pvpanic device is a simulated ISA device, through which a guest panic +pvpanic device is a simulated device, through which a guest panic event is sent to qemu, and a QMP event is generated. This allows management apps (e.g. libvirt) to be notified and respond to the event. @@ -9,6 +9,10 @@ The management app has the option of waiting for GUEST_PANICKED events, and/or polling for guest-panicked RunState, to learn when the pvpanic device has fired a panic event. +The pvpanic device can be implemented as an ISA device (using IOPORT), +or, since qemu 4.0, as a PCI device (using MMIO address space of pci +device). + ISA Interface ------------- @@ -19,6 +23,13 @@ Software should set only bits both itself and the device recognize. Currently, only bit 0 is recognized, setting it indicates a guest panic has happened. +PCI Interface +------------- + +The PCI interface is similar to the ISA interface except that it uses +MMIO. For example, the arm virt machine could enable pvpanic-pci device +according to adding "-device pvpanic-pci" in qemu command. + ACPI Interface --------------