From nobody Sat Nov 15 01:19:39 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linux.microsoft.com ARC-Seal: i=1; a=rsa-sha256; t=1758041428; cv=none; d=zohomail.com; s=zohoarc; b=Kts+7PloQF13zkj/DKKYVXY3C2r0Ic6rHeT9zE5XpseZ0/e3LkHW17dD3echMIcqXSXPwojcOX/7KynKLppAvQ+wv5SsPAflt7Nnxslotd0Qo52Wox1ydqLSapYa6+fQ3aDXpKObf4KKhiV05fADLFvpfuE+yWKzSeQ1TbijpT0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1758041428; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=sxcdffU9Fs8P+PvT1bCv7XNkZsAB+E65hqgnj7AV1dw=; b=DL2D12nwlCsMHZq6gHmDPL1O0uUOY2AOReQa/ofOc11N+5hdyUSPrMlfJRkFZiRnuPkwJpz1EBdngRNchQ6z4Oab8gnvZnva5sWZXkhNxAyL8K85oQZTEpaTYRo+ABWF8Ynv80pfOUzvuVPaiRrbeobVUnADUHQae1vAVT4tcKc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1758041428222479.97672922583195; Tue, 16 Sep 2025 09:50:28 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyYsc-0000eU-Ku; Tue, 16 Sep 2025 12:50:10 -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 1uyYsV-0000PP-KQ for qemu-devel@nongnu.org; Tue, 16 Sep 2025 12:50:07 -0400 Received: from linux.microsoft.com ([13.77.154.182]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uyYsO-0006Tu-NW for qemu-devel@nongnu.org; Tue, 16 Sep 2025 12:50:03 -0400 Received: from localhost.localdomain (unknown [167.220.208.43]) by linux.microsoft.com (Postfix) with ESMTPSA id B34B220154ED; Tue, 16 Sep 2025 09:49:50 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com B34B220154ED DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1758041395; bh=sxcdffU9Fs8P+PvT1bCv7XNkZsAB+E65hqgnj7AV1dw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rZdUXj9QrkklL7Jyd6ZRi7AfZWfAGQTzZN3vFzl4C+aTmN7imvHsJF7/BwI8OEiO4 SbzehIeEnukZOkC9EZ3TiKM/LkBH85ygHCmTHvtBVmNKl3iin+Ba+F7OkmtoJL5+px bHSwdlpqGmO+PCofX46QYwWsQMyZB+aF04bLihyc= From: Magnus Kulke To: qemu-devel@nongnu.org Cc: Markus Armbruster , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Cameron Esfahani , Paolo Bonzini , Thomas Huth , Richard Henderson , Wei Liu , Cornelia Huck , "Michael S. Tsirkin" , "Dr. David Alan Gilbert" , Roman Bolshakov , Phil Dennis-Jordan , Marcel Apfelbaum , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Zhao Liu , Eduardo Habkost , Magnus Kulke , Wei Liu , Eric Blake , Yanan Wang , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PATCH v4 07/27] accel/mshv: Add accelerator skeleton Date: Tue, 16 Sep 2025 18:48:27 +0200 Message-Id: <20250916164847.77883-8-magnuskulke@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250916164847.77883-1-magnuskulke@linux.microsoft.com> References: <20250916164847.77883-1-magnuskulke@linux.microsoft.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=13.77.154.182; envelope-from=magnuskulke@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, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_PASS=-0.001, T_SPF_HELO_TEMPERROR=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linux.microsoft.com) X-ZM-MESSAGEID: 1758041430224116600 Content-Type: text/plain; charset="utf-8" Introduce the initial scaffold for the MSHV (Microsoft Hypervisor) accelerator backend. This includes the basic directory structure and stub implementations needed to integrate with QEMU's accelerator framework. Signed-off-by: Magnus Kulke --- accel/meson.build | 1 + accel/mshv/meson.build | 6 ++ accel/mshv/mshv-all.c | 143 +++++++++++++++++++++++++++++++++++++++++ include/system/mshv.h | 35 ++++++++++ 4 files changed, 185 insertions(+) create mode 100644 accel/mshv/meson.build create mode 100644 accel/mshv/mshv-all.c diff --git a/accel/meson.build b/accel/meson.build index 6349efe682..983dfd0bd5 100644 --- a/accel/meson.build +++ b/accel/meson.build @@ -10,6 +10,7 @@ if have_system subdir('kvm') subdir('xen') subdir('stubs') + subdir('mshv') endif =20 # qtest diff --git a/accel/mshv/meson.build b/accel/mshv/meson.build new file mode 100644 index 0000000000..4c03ac7921 --- /dev/null +++ b/accel/mshv/meson.build @@ -0,0 +1,6 @@ +mshv_ss =3D ss.source_set() +mshv_ss.add(if_true: files( + 'mshv-all.c' +)) + +specific_ss.add_all(when: 'CONFIG_MSHV', if_true: mshv_ss) diff --git a/accel/mshv/mshv-all.c b/accel/mshv/mshv-all.c new file mode 100644 index 0000000000..f548b1187b --- /dev/null +++ b/accel/mshv/mshv-all.c @@ -0,0 +1,143 @@ +/* + * QEMU MSHV support + * + * Copyright Microsoft, Corp. 2025 + * + * Authors: + * Ziqiao Zhou + * Magnus Kulke + * Jinank Jain + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "qemu/event_notifier.h" +#include "qemu/module.h" +#include "qemu/main-loop.h" +#include "hw/boards.h" + +#include "hw/hyperv/hvhdk.h" +#include "hw/hyperv/hvhdk_mini.h" +#include "hw/hyperv/hvgdk.h" +#include "linux/mshv.h" + +#include "qemu/accel.h" +#include "qemu/guest-random.h" +#include "accel/accel-ops.h" +#include "accel/accel-cpu-ops.h" +#include "system/cpus.h" +#include "system/runstate.h" +#include "system/accel-blocker.h" +#include "system/address-spaces.h" +#include "system/mshv.h" +#include "system/reset.h" +#include "trace.h" +#include +#include +#include + +#define TYPE_MSHV_ACCEL ACCEL_CLASS_NAME("mshv") + +DECLARE_INSTANCE_CHECKER(MshvState, MSHV_STATE, TYPE_MSHV_ACCEL) + +bool mshv_allowed; + +MshvState *mshv_state; + +static int mshv_init(AccelState *as, MachineState *ms) +{ + error_report("unimplemented"); + abort(); +} + +static void mshv_start_vcpu_thread(CPUState *cpu) +{ + error_report("unimplemented"); + abort(); +} + +static void mshv_cpu_synchronize_post_init(CPUState *cpu) +{ + error_report("unimplemented"); + abort(); +} + +static void mshv_cpu_synchronize_post_reset(CPUState *cpu) +{ + error_report("unimplemented"); + abort(); +} + +static void mshv_cpu_synchronize_pre_loadvm(CPUState *cpu) +{ + error_report("unimplemented"); + abort(); +} + +static void mshv_cpu_synchronize(CPUState *cpu) +{ + error_report("unimplemented"); + abort(); +} + +static bool mshv_cpus_are_resettable(void) +{ + error_report("unimplemented"); + abort(); +} + +static void mshv_accel_class_init(ObjectClass *oc, const void *data) +{ + AccelClass *ac =3D ACCEL_CLASS(oc); + + ac->name =3D "MSHV"; + ac->init_machine =3D mshv_init; + ac->allowed =3D &mshv_allowed; +} + +static void mshv_accel_instance_init(Object *obj) +{ + MshvState *s =3D MSHV_STATE(obj); + + s->vm =3D 0; +} + +static const TypeInfo mshv_accel_type =3D { + .name =3D TYPE_MSHV_ACCEL, + .parent =3D TYPE_ACCEL, + .instance_init =3D mshv_accel_instance_init, + .class_init =3D mshv_accel_class_init, + .instance_size =3D sizeof(MshvState), +}; + +static void mshv_accel_ops_class_init(ObjectClass *oc, const void *data) +{ + AccelOpsClass *ops =3D ACCEL_OPS_CLASS(oc); + + ops->create_vcpu_thread =3D mshv_start_vcpu_thread; + ops->synchronize_post_init =3D mshv_cpu_synchronize_post_init; + ops->synchronize_post_reset =3D mshv_cpu_synchronize_post_reset; + ops->synchronize_state =3D mshv_cpu_synchronize; + ops->synchronize_pre_loadvm =3D mshv_cpu_synchronize_pre_loadvm; + ops->cpus_are_resettable =3D mshv_cpus_are_resettable; + ops->handle_interrupt =3D generic_handle_interrupt; +} + +static const TypeInfo mshv_accel_ops_type =3D { + .name =3D ACCEL_OPS_NAME("mshv"), + .parent =3D TYPE_ACCEL_OPS, + .class_init =3D mshv_accel_ops_class_init, + .abstract =3D true, +}; + +static void mshv_type_init(void) +{ + type_register_static(&mshv_accel_type); + type_register_static(&mshv_accel_ops_type); +} + +type_init(mshv_type_init); diff --git a/include/system/mshv.h b/include/system/mshv.h index a358691428..45808c5c50 100644 --- a/include/system/mshv.h +++ b/include/system/mshv.h @@ -14,6 +14,15 @@ #ifndef QEMU_MSHV_INT_H #define QEMU_MSHV_INT_H =20 +#include "qemu/osdep.h" +#include "qemu/accel.h" +#include "hw/hyperv/hyperv-proto.h" +#include "linux/mshv.h" +#include "hw/hyperv/hvhdk.h" +#include "qapi/qapi-types-common.h" +#include "system/memory.h" +#include "accel/accel-ops.h" + #ifdef COMPILING_PER_TARGET #ifdef CONFIG_MSHV #define CONFIG_MSHV_IS_POSSIBLE @@ -25,6 +34,32 @@ #ifdef CONFIG_MSHV_IS_POSSIBLE extern bool mshv_allowed; #define mshv_enabled() (mshv_allowed) + +typedef struct MshvMemoryListener { + MemoryListener listener; + int as_id; +} MshvMemoryListener; + +typedef struct MshvAddressSpace { + MshvMemoryListener *ml; + AddressSpace *as; +} MshvAddressSpace; + +typedef struct MshvState { + AccelState parent_obj; + int vm; + MshvMemoryListener memory_listener; + /* number of listeners */ + int nr_as; + MshvAddressSpace *as; +} MshvState; +extern MshvState *mshv_state; + +struct AccelCPUState { + int cpufd; + bool dirty; +}; + #else /* CONFIG_MSHV_IS_POSSIBLE */ #define mshv_enabled() false #endif --=20 2.34.1