From nobody Thu Nov 6 18:24:58 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1542335779577568.3512695250112; Thu, 15 Nov 2018 18:36:19 -0800 (PST) Received: from localhost ([::1]:41840 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gNTzM-0000IR-LZ for importer@patchew.org; Thu, 15 Nov 2018 21:36:08 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42832) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gNTrz-0003SJ-OX for qemu-devel@nongnu.org; Thu, 15 Nov 2018 21:28:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gNTrw-0000fx-4M for qemu-devel@nongnu.org; Thu, 15 Nov 2018 21:28:29 -0500 Received: from mxhk.zte.com.cn ([63.217.80.70]:36876) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gNTrX-0007wH-KT; Thu, 15 Nov 2018 21:28:06 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id EDC6C3D703A0B17FFBFA; Fri, 16 Nov 2018 10:28:00 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id wAG2RpvS028767; Fri, 16 Nov 2018 10:27:51 +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 2018111610282647-11036273 ; Fri, 16 Nov 2018 10:28:26 +0800 From: Peng Hao To: peter.maydell@linaro.org, drjones@redhat.com, philmd@redhat.com Date: Fri, 16 Nov 2018 18:50:06 +0800 Message-Id: <1542365406-81310-7-git-send-email-peng.hao2@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1542365406-81310-1-git-send-email-peng.hao2@zte.com.cn> References: <1542365406-81310-1-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 2018-11-16 10:28:26, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2018-11-16 10:27:35, Serialize complete at 2018-11-16 10:27:35 X-MAIL: mse01.zte.com.cn wAG2RpvS028767 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 V7 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Add mmio support info in docs/specs/pvpanic.txt. Signed-off-by: Peng Hao --- docs/specs/pvpanic.txt | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt index c7bbacc..4e1f69d 100644 --- a/docs/specs/pvpanic.txt +++ b/docs/specs/pvpanic.txt @@ -1,7 +1,7 @@ PVPANIC DEVICE =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 -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. =20 @@ -9,6 +9,13 @@ The management app has the option of waiting for GUEST_PAN= ICKED events, and/or polling for guest-panicked RunState, to learn when the pvpanic device has fired a panic event. =20 +Some architectures do not support ioport, just like arm. So add mmio +support. + +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 ------------- =20 @@ -19,6 +26,13 @@ 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. =20 +SYSBUS Interface +-------------- + +The SYSBUS interface is similar to the ISA interface except that it uses +MMIO. Pvpanic exposes a address space region 0x09070000--0x09070001 in=20 +arm virt machine. Currently only the first byte is used. + ACPI Interface -------------- =20 --=20 1.8.3.1