From patchwork Mon Dec 3 19:26:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Hao X-Patchwork-Id: 10709179 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 BD6851057 for ; Mon, 3 Dec 2018 11:06:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AA47E2AE39 for ; Mon, 3 Dec 2018 11:06:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9D2E22A888; Mon, 3 Dec 2018 11:06:28 +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 EA1292A888 for ; Mon, 3 Dec 2018 11:06:27 +0000 (UTC) Received: from localhost ([::1]:47957 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gTm3W-0005iU-Nr for patchwork-qemu-devel@patchwork.kernel.org; Mon, 03 Dec 2018 06:06:26 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51927) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gTm1k-0004Ad-G6 for qemu-devel@nongnu.org; Mon, 03 Dec 2018 06:04:38 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gTm1i-0002gy-Tt for qemu-devel@nongnu.org; Mon, 03 Dec 2018 06:04:36 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:58706 helo=mxct.zte.com.cn) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gTm1d-0002ZM-7g; Mon, 03 Dec 2018 06:04:29 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 54EBC3E2DAC5772974F7; Mon, 3 Dec 2018 19:04:27 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id wB3B4FmW097986; Mon, 3 Dec 2018 19:04:15 +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 2018120319042307-14451350 ; Mon, 3 Dec 2018 19:04:23 +0800 From: Peng Hao To: peter.maydell@linaro.org, drjones@redhat.com, philmd@redhat.com Date: Tue, 4 Dec 2018 03:26:49 +0800 Message-Id: <1543865209-50994-9-git-send-email-peng.hao2@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1543865209-50994-1-git-send-email-peng.hao2@zte.com.cn> References: <1543865209-50994-1-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 2018-12-03 19:04:23, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2018-12-03 19:04:15, Serialize complete at 2018-12-03 19:04:15 X-MAIL: mse01.zte.com.cn wB3B4FmW097986 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 202.103.147.172 Subject: [Qemu-devel] [PATCH V11 8/8] 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. Reviewed-by: Andrew Jones Signed-off-by: Peng Hao --- docs/specs/pvpanic.txt | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt index c7bbacc..994f080 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 +9,9 @@ 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 SYSBUS device (using MMIO). + ISA Interface ------------- @@ -19,6 +22,13 @@ 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 +---------------- + +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], where currently only the first byte is used. + ACPI Interface --------------