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GET /api/patches/2219141/?format=api
{ "id": 2219141, "url": "http://patchwork.ozlabs.org/api/patches/2219141/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402-mshv_accel_arm64_supp-v2-3-754895c15e9e@linux.microsoft.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260402-mshv_accel_arm64_supp-v2-3-754895c15e9e@linux.microsoft.com>", "list_archive_url": null, "date": "2026-04-02T12:52:30", "name": "[v2,03/14] meson, target/arm/mshv: Enable arm64 build & add initial MSHV support", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ae81065cd26b2c55627c56261e8e4467ae501d62", "submitter": { "id": 92925, "url": "http://patchwork.ozlabs.org/api/people/92925/?format=api", "name": "Aastha Rawat", "email": "aastharawat@linux.microsoft.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402-mshv_accel_arm64_supp-v2-3-754895c15e9e@linux.microsoft.com/mbox/", "series": [ { "id": 498484, "url": "http://patchwork.ozlabs.org/api/series/498484/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=498484", "date": "2026-04-02T12:52:39", "name": "Add ARM64 support for MSHV accelerator", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/498484/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2219141/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219141/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=linux.microsoft.com header.i=@linux.microsoft.com\n header.a=rsa-sha256 header.s=default header.b=mqL0UB4q;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fmjqN6mBfz1yGH\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 03 Apr 2026 00:48:16 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1w8ILJ-0008PO-1D; Thu, 02 Apr 2026 09:44:17 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <aastharawat@linux.microsoft.com>)\n id 1w8IKx-0004lE-O1; Thu, 02 Apr 2026 09:43:55 -0400", "from linux.microsoft.com ([13.77.154.182])\n by eggs.gnu.org with esmtp (Exim 4.90_1)\n (envelope-from <aastharawat@linux.microsoft.com>)\n id 1w8HXl-0008QZ-JN; Thu, 02 Apr 2026 08:53:08 -0400", "from localhost (unknown [131.107.147.136])\n by linux.microsoft.com (Postfix) with ESMTPSA id 23C5D20B7136;\n Thu, 2 Apr 2026 05:53:00 -0700 (PDT)" ], "DKIM-Filter": "OpenDKIM Filter v2.11.0 linux.microsoft.com 23C5D20B7136", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com;\n s=default; t=1775134380;\n bh=m0k2+p45IxRoR7EBbAy9Rxxi2hTnQ1VuZluHvqCqsIY=;\n h=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n b=mqL0UB4qvak1Chc5pYRIuja6w5Vt4dCsuZ3sCNXraeoVACXlJUOSD6acpuPH+1LMi\n DEEXUOwEyGy0vMFJmzf++Fmxv+wdlKzu5qXoDtn5IOmP5DeCpri2MVpRrP2N64MtdB\n T3W1BrbQ2ACzwzif6kQ7q7QJataszzwOnxgVybUk=", "From": "Aastha Rawat <aastharawat@linux.microsoft.com>", "Date": "Thu, 02 Apr 2026 12:52:30 +0000", "Subject": "[PATCH v2 03/14] meson, target/arm/mshv: Enable arm64 build & add\n initial MSHV support", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "\n <20260402-mshv_accel_arm64_supp-v2-3-754895c15e9e@linux.microsoft.com>", "References": "\n <20260402-mshv_accel_arm64_supp-v2-0-754895c15e9e@linux.microsoft.com>", "In-Reply-To": "\n <20260402-mshv_accel_arm64_supp-v2-0-754895c15e9e@linux.microsoft.com>", "To": "qemu-devel@nongnu.org", "Cc": "Magnus Kulke <magnuskulke@linux.microsoft.com>,\n Wei Liu <wei.liu@kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,\n\t=?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>,\n\t=?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= <berrange@redhat.com>, =?utf-8?q?Phil?=\n\t=?utf-8?q?ippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>,\n Peter Maydell <peter.maydell@linaro.org>,\n Anirudh Rayabharam <anirudh@anirudhrb.com>,\n Aastha Rawat <aastharawat@linux.microsoft.com>,\n Magnus Kulke <magnus.kulke@linux.microsoft.com>, qemu-arm@nongnu.org,\n Alexander Graf <agraf@csgraf.de>, Pedro Barbuda <pbarbuda@microsoft.com>,\n Mohamed Mediouni <mohamed@unpredictable.fr>", "X-Mailer": "b4 0.15.1", "Received-SPF": "pass client-ip=13.77.154.182;\n envelope-from=aastharawat@linux.microsoft.com; helo=linux.microsoft.com", "X-Spam_score_int": "-42", "X-Spam_score": "-4.3", "X-Spam_bar": "----", "X-Spam_report": "(-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3,\n RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001,\n 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 <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Enable the build of the MSHV accelerator for arm64 in the Meson build\nsystem. Introduce initial files and stub implementations to support MSHV\nfor the ARM target.\n\nSigned-off-by: Aastha Rawat <aastharawat@linux.microsoft.com>\n---\n meson.build | 7 +++---\n target/arm/meson.build | 1 +\n target/arm/mshv/meson.build | 7 ++++++\n target/arm/mshv/mshv-all.c | 54 +++++++++++++++++++++++++++++++++++++++++++++\n 4 files changed, 66 insertions(+), 3 deletions(-)", "diff": "diff --git a/meson.build b/meson.build\nindex ed82247111..bf12fda40f 100644\n--- a/meson.build\n+++ b/meson.build\n@@ -303,7 +303,8 @@ if cpu == 'aarch64'\n accelerator_targets += {\n 'CONFIG_HVF': ['aarch64-softmmu'],\n 'CONFIG_NITRO': ['aarch64-softmmu'],\n- 'CONFIG_WHPX': ['aarch64-softmmu']\n+ 'CONFIG_WHPX': ['aarch64-softmmu'],\n+ 'CONFIG_MSHV': ['aarch64-softmmu'],\n }\n elif cpu == 'x86_64'\n accelerator_targets += {\n@@ -855,8 +856,8 @@ if get_option('kvm').allowed() and host_os == 'linux'\n endif\n \n if get_option('mshv').allowed() and host_os == 'linux'\n- if get_option('mshv').enabled() and host_machine.cpu() != 'x86_64'\n- error('mshv accelerator requires x64_64 host')\n+ if get_option('mshv').enabled() and not (host_machine.cpu() in [ 'x86_64', 'aarch64' ])\n+ error('The mshv accelerator requires an x86_64 or aarch64 host')\n endif\n accelerators += 'CONFIG_MSHV'\n endif\ndiff --git a/target/arm/meson.build b/target/arm/meson.build\nindex 6e0e504a40..8aa8cac137 100644\n--- a/target/arm/meson.build\n+++ b/target/arm/meson.build\n@@ -59,6 +59,7 @@ arm_common_system_ss.add(files(\n \n subdir('hvf')\n subdir('whpx')\n+subdir('mshv')\n \n if 'CONFIG_TCG' in config_all_accel\n subdir('tcg')\ndiff --git a/target/arm/mshv/meson.build b/target/arm/mshv/meson.build\nnew file mode 100644\nindex 0000000000..169643691e\n--- /dev/null\n+++ b/target/arm/mshv/meson.build\n@@ -0,0 +1,7 @@\n+arm_mshv_ss = ss.source_set()\n+\n+arm_mshv_ss.add(files(\n+ 'mshv-all.c',\n+))\n+\n+arm_system_ss.add_all(when: 'CONFIG_MSHV', if_true: arm_mshv_ss)\ndiff --git a/target/arm/mshv/mshv-all.c b/target/arm/mshv/mshv-all.c\nnew file mode 100644\nindex 0000000000..1c82e2c593\n--- /dev/null\n+++ b/target/arm/mshv/mshv-all.c\n@@ -0,0 +1,54 @@\n+/*\n+ * QEMU MSHV support\n+ *\n+ * Copyright Microsoft, Corp. 2026\n+ *\n+ * Authors: Aastha Rawat <aastharawat@linux.microsoft.com>\n+ * Anirudh Rayabharam <anirudh@anirudhrb.com>\n+ *\n+ * SPDX-License-Identifier: GPL-2.0-or-later\n+ */\n+\n+#include \"system/mshv.h\"\n+#include \"system/mshv_int.h\"\n+\n+int mshv_load_regs(CPUState *cpu)\n+{\n+ return 0;\n+}\n+\n+int mshv_arch_put_registers(const CPUState *cpu)\n+{\n+ return 0;\n+}\n+\n+int mshv_run_vcpu(int vm_fd, CPUState *cpu, hv_message *msg, MshvVmExit *exit)\n+{\n+ return 0;\n+}\n+\n+void mshv_arch_init_vcpu(CPUState *cpu)\n+{\n+\n+}\n+\n+void mshv_arch_destroy_vcpu(CPUState *cpu)\n+{\n+\n+}\n+\n+void mshv_init_mmio_emu(void)\n+{\n+\n+}\n+\n+void mshv_arch_amend_proc_features(\n+ union hv_partition_synthetic_processor_features *features)\n+{\n+\n+}\n+\n+int mshv_arch_post_init_vm(int vm_fd)\n+{\n+ return 0;\n+}\n", "prefixes": [ "v2", "03/14" ] }