From patchwork Mon Nov 12 11:42:20 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Hao X-Patchwork-Id: 10678089 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 864F813BF for ; Mon, 12 Nov 2018 03:26:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 762A62A14F for ; Mon, 12 Nov 2018 03:26:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6A7212A154; Mon, 12 Nov 2018 03:26:33 +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 19F4D2A14F for ; Mon, 12 Nov 2018 03:26:33 +0000 (UTC) Received: from localhost ([::1]:44596 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gM2rw-0008Kw-DJ for patchwork-qemu-devel@patchwork.kernel.org; Sun, 11 Nov 2018 22:26:32 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40173) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gM2mO-0002Ah-7h for qemu-devel@nongnu.org; Sun, 11 Nov 2018 22:20:49 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gM2mN-0003En-Dz for qemu-devel@nongnu.org; Sun, 11 Nov 2018 22:20:48 -0500 Received: from mxhk.zte.com.cn ([63.217.80.70]:26488) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gM2mG-0002pE-D3; Sun, 11 Nov 2018 22:20:41 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id C4A95F8464250B9CCE8B; Mon, 12 Nov 2018 11:20:37 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id wAC3JsBo085000; Mon, 12 Nov 2018 11:19:54 +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 2018111211195777-10076112 ; Mon, 12 Nov 2018 11:19:57 +0800 From: Peng Hao To: peter.maydell@linaro.org, drjones@redhat.com, philmd@redhat.com Date: Mon, 12 Nov 2018 19:42:20 +0800 Message-Id: <1542022940-46849-7-git-send-email-peng.hao2@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1542022940-46849-1-git-send-email-peng.hao2@zte.com.cn> References: <1542022940-46849-1-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 2018-11-12 11:19:57, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2018-11-12 11:19:53, Serialize complete at 2018-11-12 11:19:53 X-MAIL: mse01.zte.com.cn wAC3JsBo085000 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 V6 6/6] 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 | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt index c7bbacc..5d8e9dc 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. +When pvpanic device is implemented as a ISA device, it supports IOPORT +mode. If pvpanic device supports MMIO mode, it will be implemented as +a SYSBUS 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. +SYSBUS Interface +-------------- + +It is basically the same as ISA interface except that it uses MMIO. Pvpanic exposes +a address space region 0x09060000--0x09060001 in arm virt machine. +Currently only the first byte is used. + ACPI Interface --------------