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hw/i386: Introduce the microvm machine type

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microvm is a machine type inspired by Firecracker and constructed
after its machine model.

It's a minimalist machine type without PCI nor ACPI support, designed
for short-lived guests. microvm also establishes a baseline for
benchmarking and optimizing both QEMU and guest operating systems,
since it is optimized for both boot time and footprint.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Sergio Lopez 2019-10-02 08:03:19 +02:00 • committed by Paolo Bonzini
parent e00803aab4
commit 0ebf007dda
5 changed files with 655 additions and 0 deletions
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include/hw/i386/microvm.h Normal file
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/*
* Copyright (c) 2018 Intel Corporation
* Copyright (c) 2019 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HW_I386_MICROVM_H
#define HW_I386_MICROVM_H
#include "qemu-common.h"
#include "exec/hwaddr.h"
#include "qemu/notify.h"
#include "hw/boards.h"
#include "hw/i386/x86.h"
/* Platform virtio definitions */
#define VIRTIO_MMIO_BASE 0xc0000000
#define VIRTIO_IRQ_BASE 5
#define VIRTIO_NUM_TRANSPORTS 8
#define VIRTIO_CMDLINE_MAXLEN 64
/* Machine type options */
#define MICROVM_MACHINE_PIT "pit"
#define MICROVM_MACHINE_PIC "pic"
#define MICROVM_MACHINE_RTC "rtc"
#define MICROVM_MACHINE_ISA_SERIAL "isa-serial"
#define MICROVM_MACHINE_OPTION_ROMS "x-option-roms"
#define MICROVM_MACHINE_AUTO_KERNEL_CMDLINE "auto-kernel-cmdline"
typedef struct {
X86MachineClass parent;
HotplugHandler *(*orig_hotplug_handler)(MachineState *machine,
DeviceState *dev);
} MicrovmMachineClass;
typedef struct {
X86MachineState parent;
/* Machine type options */
OnOffAuto pic;
OnOffAuto pit;
OnOffAuto rtc;
bool isa_serial;
bool option_roms;
bool auto_kernel_cmdline;
/* Machine state */
bool kernel_cmdline_fixed;
} MicrovmMachineState;
#define TYPE_MICROVM_MACHINE MACHINE_TYPE_NAME("microvm")
#define MICROVM_MACHINE(obj) \
OBJECT_CHECK(MicrovmMachineState, (obj), TYPE_MICROVM_MACHINE)
#define MICROVM_MACHINE_GET_CLASS(obj) \
OBJECT_GET_CLASS(MicrovmMachineClass, obj, TYPE_MICROVM_MACHINE)
#define MICROVM_MACHINE_CLASS(class) \
OBJECT_CLASS_CHECK(MicrovmMachineClass, class, TYPE_MICROVM_MACHINE)
#endif