From patchwork Sat Nov 4 11:25:21 2023 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: 13445499 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 D895DC4332F for ; Sat, 4 Nov 2023 11:26:38 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qzEmk-0003xa-Mt; Sat, 04 Nov 2023 07:25:50 -0400 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 1qzEmc-0003wL-0t for qemu-devel@nongnu.org; Sat, 04 Nov 2023 07:25:42 -0400 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 1qzEmY-0004Mp-Um for qemu-devel@nongnu.org; Sat, 04 Nov 2023 07:25:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=t-8ch.de; s=mail; t=1699097130; bh=Feyv68vDnKce0cp8shSFLIDQwIOdHSVSSxODRVSXuTw=; h=From:Subject:Date:To:Cc:From; b=XHEWKcFNXIr68FRhQNGYHED7vmVa1wsFiwSnu8OYmx7V+g5egombXp8vIoWCtQ4ha Or5MlWjkx6ydambDSEGDBL8A9tvj7nL2YajP9zS8icidYDyRuGSK0THXLq1ZENAWx+ y4b7jhOCfovF8cF2j+6u4Iw/7yqsTD0ifLwoEt8M= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Subject: [PATCH RFC 0/3] hw/misc/pvpanic: add support for normal shutdowns Date: Sat, 04 Nov 2023 12:25:21 +0100 Message-Id: <20231104-pvpanic-shutdown-v1-0-02353157891b@t-8ch.de> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIACEqRmUC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDI2NDQwMT3YKygsS8zGTd4ozSkpT88jxdA6NUkyST5CQTSxNLJaC2gqLUtMw KsJHRSkFuzkqxtbUAxMCxm2cAAAA= 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=1699097130; l=1754; i=thomas@t-8ch.de; s=20221212; h=from:subject:message-id; bh=Feyv68vDnKce0cp8shSFLIDQwIOdHSVSSxODRVSXuTw=; b=6R58eTDU+8UB8DpfGo3hOrGe5yCZdjDUgSsifzjHkMDDETLRMzlutfuGAz+8uKezxKk2nT23C Kx+H2MUmuoRBIBNmZyGP/LcLDj33StrhIguNfoGDPe5pTI+KiX4caxT 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. The background is the usage of minimal Linux kernels with different architectures for testing purposes. Poweroff support varies highly per architecture and requires a bunch of code to be compiled to work. pvpanic on the other hand is very small and uniform. I sent an RFC[0] for this before to qemu-devel and lkml which didn't generate feedback, so let's discuss the concrete proposal. Patch 1 and 2 are general cleanups, that seems useful even without this proposal being implemented. I'll send the corresponding Linux patch to LKML. [0] https://lore.kernel.org/all/984794aa-4af0-4c68-a74e-7420ec3151a5@t-8ch.de/ Signed-off-by: Thomas Weißschuh --- Thomas Weißschuh (3): hw/misc/pvpanic: centralize definition of supported events tests/qtest/pvanic: use centralized definition of supported events hw/misc/pvpanic: add support for normal shutdowns docs/specs/pvpanic.rst | 2 ++ hw/misc/pvpanic-isa.c | 3 +-- hw/misc/pvpanic-pci.c | 3 +-- hw/misc/pvpanic.c | 8 ++++++-- include/hw/misc/pvpanic.h | 2 ++ include/standard-headers/linux/pvpanic.h | 1 + tests/qtest/pvpanic-pci-test.c | 5 +++-- tests/qtest/pvpanic-test.c | 5 +++-- 8 files changed, 19 insertions(+), 10 deletions(-) --- base-commit: d762bf97931b58839316b68a570eecc6143c9e3e change-id: 20231104-pvpanic-shutdown-02e4b4cb4949 Best regards,