From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D46A7606A31C for ; Fri, 30 Oct 2026 14:21:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.a=rsa-sha256 header.s=default header.b=cbN+orWC Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1xMnTP-00061o-Ln; Fri, 30 Oct 2026 10:20:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1xMnTL-000611-LZ for qemu-devel@nongnu.org; Fri, 30 Oct 2026 10:20:47 -0400 Received: from linux.microsoft.com ([13.77.154.182]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1xMnTJ-0003FA-GK for qemu-devel@nongnu.org; Fri, 30 Oct 2026 10:20:47 -0400 Received: from laptop.localdomain (unknown [81.196.141.157]) by linux.microsoft.com (Postfix) with ESMTPSA id 2233520B7172; Fri, 30 Oct 2026 07:20:27 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 2233520B7172 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1793370030; bh=8YYAiKf9nIww5PjS7RNP4RymjOj6pnwOyDgWmUMQLfo=; h=From:To:Cc:Subject:Date:From; b=cbN+orWCe0A2zElXQdKg39JIkBLKDT+/L+hzSaF6c56qLqFFHUIIEmh+g7Z6ezVjZ 4uk294PMgJNVBUhPMnXWtMC0MI9xrrj/qGzkdf5Vh98TQl1wOJUnZjVX/qg+zbFcmw m4nGbcaxfUUB3VEkHMMhB/lHnruqTv3fPST9Hl8I= From: =?UTF-8?q?Doru=20Bl=C3=A2nzeanu?= To: qemu-devel@nongnu.org Cc: Wei Liu , "Michael S. Tsirkin" , Magnus Kulke , Paolo Bonzini , =?UTF-8?q?Doru=20Bl=C3=A2nzeanu?= , Cornelia Huck , =?UTF-8?q?Doru=20Bl=C3=A2nzeanu?= , Magnus Kulke Subject: [RFC PATCH 0/3] mshv: Fix soft reboot by using scrub partition ioctl on init Date: Fri, 30 Oct 2026 16:20:34 +0200 Message-ID: <20261030142037.267641-1-dblanzeanu@linux.microsoft.com> X-Mailer: git-send-email 2.54.0 X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=13.77.154.182; envelope-from=dblanzeanu@linux.microsoft.com; helo=linux.microsoft.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 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: qemu development List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 This series is an RFC because, the kernel mshv driver changes that introduce this ioctl, are not upstream yet. Below is a link to the posted kernel patch. https://lore.kernel.org/linux-hyperv/20261029062801.28598-2-wei.liu@kernel.org/ This patch series uses the SCRUB_PARTITION ioctl during reset to ensure a sane state for the mshv driver. The series consists of: 1. accel/mshv: mask mshv cpus as resetable 2. include/hw/hyperv: Add SCRUB_PARTITION ioctl 3. accel/mshv: use scrub_partition ioctl on init The second commit that adds the SCRUB_PARTITION ioctl definition can be dropped once the kernel patch is merged and the Qemu linux-headers are updated. In short, the changes mark the vCPUs as resettable and run the SCRUB_PARTITION ioctl on the `synchronize_post_reset` hook for the first vCPU. Doru Blânzeanu (2): include/hw/hyperv: Add SCRUB_PARTITION ioctl accel/mshv: use scrub_partition ioctl on init Magnus Kulke (1): accel/mshv: mark mshv cpus as resetable accel/mshv/mshv-all.c | 27 +++++++++++++++++++++++++-- include/hw/hyperv/hvgdk_mini.h | 2 ++ 2 files changed, 27 insertions(+), 2 deletions(-) -- 2.54.0