From patchwork Sun Jan 7 14:05:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13512900 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 07D67C47073 for ; Sun, 7 Jan 2024 14:05:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rMTmE-0005hD-KX; Sun, 07 Jan 2024 09:05:23 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rMTm6-0005QL-8q for qemu-devel@nongnu.org; Sun, 07 Jan 2024 09:05:14 -0500 Received: from todd.t-8ch.de ([2a01:4f8:c010:41de::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rMTm3-0006uV-Dv for qemu-devel@nongnu.org; Sun, 07 Jan 2024 09:05:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=t-8ch.de; s=mail; t=1704636309; bh=hkWFoazCStKhexD0vSbfqqc3avb43oj4ZmJz8Qsbpmc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=in5IO91Zde07yfNjAgg/9ix32WBobUAM1pE6N2Dz+1ackBzR7mUBVwZ3a3TQ9wmOo NOk5w/76vgX4QODpFwADp4gyHgq7Kx6TLATSy2kUBv8MeLcUUE2XGD514rwO5oF3yG wpeNpWZ6GSm5qCfimWJmUxLg6SeebbKIFlPoxgfM= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Sun, 07 Jan 2024 15:05:11 +0100 Subject: [PATCH v4 4/4] hw/misc/pvpanic: add support for normal shutdowns MIME-Version: 1.0 Message-Id: <20240107-pvpanic-shutdown-v4-4-81500a7e4081@t-8ch.de> References: <20240107-pvpanic-shutdown-v4-0-81500a7e4081@t-8ch.de> In-Reply-To: <20240107-pvpanic-shutdown-v4-0-81500a7e4081@t-8ch.de> To: "Michael S. Tsirkin" , Cornelia Huck , Paolo Bonzini , Thomas Huth , Laurent Vivier Cc: qemu-devel@nongnu.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1704636309; l=1914; i=thomas@t-8ch.de; s=20221212; h=from:subject:message-id; bh=hkWFoazCStKhexD0vSbfqqc3avb43oj4ZmJz8Qsbpmc=; b=Hbzu59PVW0GgM9+ULmo/QwyJ/JlzS9xcazckbEfpjYHkhIC/6tTahBnJYFlIQ6ftjtRMeFpq+ TucI3sL/VH1CKDXQYrhCk9AhMyhvVNznX1B3dEC878nnFvwebOUUVrt X-Developer-Key: i=thomas@t-8ch.de; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= Received-SPF: pass client-ip=2a01:4f8:c010:41de::1; envelope-from=thomas@t-8ch.de; helo=todd.t-8ch.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Shutdown requests are normally hardware dependent. By extending pvpanic to also handle shutdown requests, guests can submit such requests with an easily implementable and cross-platform mechanism. Signed-off-by: Thomas Weißschuh Acked-by: Cornelia Huck Signed-off-by: Alejandro Jimenez --- docs/specs/pvpanic.rst | 2 ++ hw/misc/pvpanic.c | 5 +++++ include/hw/misc/pvpanic.h | 3 ++- 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/docs/specs/pvpanic.rst b/docs/specs/pvpanic.rst index f894bc19555f..796cc0348a38 100644 --- a/docs/specs/pvpanic.rst +++ b/docs/specs/pvpanic.rst @@ -29,6 +29,8 @@ bit 1 a guest panic has happened and will be handled by the guest; the host should record it or report it, but should not affect the execution of the guest. +bit 2 + a guest shutdown has happened and should be processed by the host PCI Interface ------------- diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c index a4982cc5928e..246f9ae4e992 100644 --- a/hw/misc/pvpanic.c +++ b/hw/misc/pvpanic.c @@ -40,6 +40,11 @@ static void handle_event(int event) qemu_system_guest_crashloaded(NULL); return; } + + if (event & PVPANIC_SHUTDOWN) { + qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + return; + } } /* return supported events on read */ diff --git a/include/hw/misc/pvpanic.h b/include/hw/misc/pvpanic.h index 48f2ec4c86a1..9e36a02d5a4f 100644 --- a/include/hw/misc/pvpanic.h +++ b/include/hw/misc/pvpanic.h @@ -20,7 +20,8 @@ #define PVPANIC_PANICKED (1 << 0) #define PVPANIC_CRASH_LOADED (1 << 1) -#define PVPANIC_EVENTS (PVPANIC_PANICKED | PVPANIC_CRASH_LOADED) +#define PVPANIC_SHUTDOWN (1 << 2) +#define PVPANIC_EVENTS (PVPANIC_PANICKED | PVPANIC_CRASH_LOADED | PVPANIC_SHUTDOWN) #define TYPE_PVPANIC_ISA_DEVICE "pvpanic" #define TYPE_PVPANIC_PCI_DEVICE "pvpanic-pci"