From: Magnus Kulke <[email protected]> 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 <[email protected]> Link: https://lore.kernel.org/r/[email protected] [Move include of linux/mshv.h in the per-target section; create include/system/mshv_int.h. - Paolo] Signed-off-by: Paolo Bonzini <[email protected]> --- include/system/mshv.h | 12 ++++ include/system/mshv_int.h | 41 +++++++++++ accel/mshv/mshv-all.c | 144 ++++++++++++++++++++++++++++++++++++++ accel/meson.build | 1 + accel/mshv/meson.build | 6 ++ 5 files changed, 204 insertions(+) create mode 100644 include/system/mshv_int.h create mode 100644 accel/mshv/mshv-all.c create mode 100644 accel/mshv/meson.build diff --git a/include/system/mshv.h b/include/system/mshv.h index 2a504ed81f2..434ea9682e1 100644 --- a/include/system/mshv.h +++ b/include/system/mshv.h @@ -14,8 +14,17 @@ #ifndef QEMU_MSHV_H #define QEMU_MSHV_H +#include "qemu/osdep.h" +#include "qemu/accel.h" +#include "hw/hyperv/hyperv-proto.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 +#include <linux/mshv.h> #define CONFIG_MSHV_IS_POSSIBLE #endif #else @@ -30,6 +39,9 @@ extern bool mshv_allowed; #endif #define mshv_msi_via_irqfd_enabled() false +typedef struct MshvState MshvState; +extern MshvState *mshv_state; + /* interrupt */ int mshv_irqchip_add_msi_route(int vector, PCIDevice *dev); int mshv_irqchip_update_msi_route(int virq, MSIMessage msg, PCIDevice *dev); diff --git a/include/system/mshv_int.h b/include/system/mshv_int.h new file mode 100644 index 00000000000..132491b599d --- /dev/null +++ b/include/system/mshv_int.h @@ -0,0 +1,41 @@ +/* + * QEMU MSHV support + * + * Copyright Microsoft, Corp. 2025 + * + * Authors: Ziqiao Zhou <[email protected]> + * Magnus Kulke <[email protected]> + * Jinank Jain <[email protected]> + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + */ + +#ifndef QEMU_MSHV_INT_H +#define QEMU_MSHV_INT_H + +struct AccelCPUState { + int cpufd; + bool dirty; +}; + +typedef struct MshvMemoryListener { + MemoryListener listener; + int as_id; +} MshvMemoryListener; + +typedef struct MshvAddressSpace { + MshvMemoryListener *ml; + AddressSpace *as; +} MshvAddressSpace; + +struct MshvState { + AccelState parent_obj; + int vm; + MshvMemoryListener memory_listener; + /* number of listeners */ + int nr_as; + MshvAddressSpace *as; +}; + +#endif diff --git a/accel/mshv/mshv-all.c b/accel/mshv/mshv-all.c new file mode 100644 index 00000000000..ae12f0f58b9 --- /dev/null +++ b/accel/mshv/mshv-all.c @@ -0,0 +1,144 @@ +/* + * QEMU MSHV support + * + * Copyright Microsoft, Corp. 2025 + * + * Authors: + * Ziqiao Zhou <[email protected]> + * Magnus Kulke <[email protected]> + * Jinank Jain <[email protected]> + * + * 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/mshv_int.h" +#include "system/reset.h" +#include "trace.h" +#include <err.h> +#include <stdint.h> +#include <sys/ioctl.h> + +#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 = ACCEL_CLASS(oc); + + ac->name = "MSHV"; + ac->init_machine = mshv_init; + ac->allowed = &mshv_allowed; +} + +static void mshv_accel_instance_init(Object *obj) +{ + MshvState *s = MSHV_STATE(obj); + + s->vm = 0; +} + +static const TypeInfo mshv_accel_type = { + .name = TYPE_MSHV_ACCEL, + .parent = TYPE_ACCEL, + .instance_init = mshv_accel_instance_init, + .class_init = mshv_accel_class_init, + .instance_size = sizeof(MshvState), +}; + +static void mshv_accel_ops_class_init(ObjectClass *oc, const void *data) +{ + AccelOpsClass *ops = ACCEL_OPS_CLASS(oc); + + ops->create_vcpu_thread = mshv_start_vcpu_thread; + ops->synchronize_post_init = mshv_cpu_synchronize_post_init; + ops->synchronize_post_reset = mshv_cpu_synchronize_post_reset; + ops->synchronize_state = mshv_cpu_synchronize; + ops->synchronize_pre_loadvm = mshv_cpu_synchronize_pre_loadvm; + ops->cpus_are_resettable = mshv_cpus_are_resettable; + ops->handle_interrupt = generic_handle_interrupt; +} + +static const TypeInfo mshv_accel_ops_type = { + .name = ACCEL_OPS_NAME("mshv"), + .parent = TYPE_ACCEL_OPS, + .class_init = mshv_accel_ops_class_init, + .abstract = 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/accel/meson.build b/accel/meson.build index 6349efe682f..983dfd0bd55 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 # qtest diff --git a/accel/mshv/meson.build b/accel/mshv/meson.build new file mode 100644 index 00000000000..4c03ac79219 --- /dev/null +++ b/accel/mshv/meson.build @@ -0,0 +1,6 @@ +mshv_ss = ss.source_set() +mshv_ss.add(if_true: files( + 'mshv-all.c' +)) + +specific_ss.add_all(when: 'CONFIG_MSHV', if_true: mshv_ss) -- 2.51.0
