From patchwork Sat Nov 24 16:34:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Hao X-Patchwork-Id: 10696447 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 D4CE913BB for ; Sat, 24 Nov 2018 08:24:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C163F2AF2D for ; Sat, 24 Nov 2018 08:24:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AFF9F2AEEB; Sat, 24 Nov 2018 08:24:59 +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=-6.0 required=2.0 tests=BAYES_00,DATE_IN_FUTURE_06_12, 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 5490E2AEEB for ; Sat, 24 Nov 2018 08:24:59 +0000 (UTC) Received: from localhost ([::1]:55654 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gQTFI-0003Vl-68 for patchwork-qemu-devel@patchwork.kernel.org; Sat, 24 Nov 2018 03:24:56 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48086) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gQTAt-00007J-Qf for qemu-devel@nongnu.org; Sat, 24 Nov 2018 03:20:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gQT44-0005ia-4H for qemu-devel@nongnu.org; Sat, 24 Nov 2018 03:13:20 -0500 Received: from mxhk.zte.com.cn ([63.217.80.70]:27278) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gQT41-0005Lm-Fu; Sat, 24 Nov 2018 03:13:17 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id DF1BBB2BC04D625E8CB1; Sat, 24 Nov 2018 16:13:11 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id wAO8D7P0023579; Sat, 24 Nov 2018 16:13:07 +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 2018112416135360-12697223 ; Sat, 24 Nov 2018 16:13:53 +0800 From: Peng Hao To: peter.maydell@linaro.org, drjones@redhat.com, philmd@redhat.com Date: Sun, 25 Nov 2018 00:34:33 +0800 Message-Id: <1543077273-16201-10-git-send-email-peng.hao2@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1543077273-16201-1-git-send-email-peng.hao2@zte.com.cn> References: <1543077273-16201-1-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 2018-11-24 16:13:53, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2018-11-24 16:12:47, Serialize complete at 2018-11-24 16:12:47 X-MAIL: mse01.zte.com.cn wAO8D7P0023579 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 10/10] 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 support info in docs/specs/pvpanic.txt. Signed-off-by: Peng Hao --- docs/specs/pvpanic.txt | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt index c7bbacc..2d06ee5 100644 --- a/docs/specs/pvpanic.txt +++ b/docs/specs/pvpanic.txt @@ -1,14 +1,18 @@ PVPANIC DEVICE ============== -pvpanic device is a simulated ISA device, through which a guest panic -event is sent to qemu, and a QMP event is generated. This allows +pvpanic device is a simulated ISA/SysBus 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. -The management app has the option of waiting for GUEST_PANICKED events, +The ma:wqnagement 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. +When pvpanic device is implemented as a ISA device, it supports IOPORT +mode. Since QEMU v3.2 pvpanic also supports MMIO mode, it will be +implemented as a SYSBUS device. + ISA Interface ------------- @@ -19,6 +23,14 @@ 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. +SYSBUS Interface +---------------- + +The SYSBUS interface is similar to the ISA interface except that it uses +MMIO. For example, the arm virt machine could put the pvpanic device at +[0x9070000, 0x9070001] and currently only the first byte is used. + + ACPI Interface --------------