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xemu/include/hw
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Claudio Imbrenda c3a073c610 s390x/pv: Add support for asynchronous teardown for reboot 
This patch adds support for the asynchronous teardown for reboot for
protected VMs.

When attempting to tear down a protected VM, try to use the new
asynchronous interface first. If that fails, fall back to the classic
synchronous one.

The asynchronous interface involves invoking the new
KVM_PV_ASYNC_DISABLE_PREPARE command for the KVM_S390_PV_COMMAND ioctl.

This will prepare the current protected VM for asynchronous teardown.
Once the protected VM is prepared for teardown, execution can continue
immediately.

Once the protected VM has been prepared, a new thread is started to
actually perform the teardown. The new thread uses the new
KVM_PV_ASYNC_DISABLE command for the KVM_S390_PV_COMMAND ioctl. The
previously prepared protected VM is torn down in the new thread.

Once KVM_PV_ASYNC_DISABLE is invoked, it is possible to use
KVM_PV_ASYNC_DISABLE_PREPARE again. If a protected VM has already been
prepared and its cleanup has not started, it will not be possible to
prepare a new VM. In that case the classic synchronous teardown has to
be performed.

The synchronous teardown will now also clean up any prepared VMs whose
asynchronous teardown has not been initiated yet.

This considerably speeds up the reboot of a protected VM; for large VMs
especially, it could take a long time to perform a reboot with the
traditional synchronous teardown, while with this patch it is almost
immediate.

Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230214163035.44104-3-imbrenda@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
 		2023-02-27 09:15:39 +01:00
..
acpi pcihp: make bridge describe itself using AcpiDevAmlIfClass:build_dev_aml 2023-01-28 06:21:29 -05:00
adc hw/arm/npcm7xx: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
arm hw/arm/smmu-common: Support 64-bit addresses 2023-02-16 16:00:48 +00:00
audio introduce -audio as a replacement for -soundhw 2022-05-14 12:33:44 +02:00
block include/hw/block: Include hw/block/block.h where needed 2023-01-20 07:25:06 +01:00
char include/hw: Do not include "hw/registerfields.h" in headers that don't need it 2023-02-14 09:02:42 +01:00
core cpus: Make {start,end}_exclusive() recursive 2023-02-21 08:44:13 -10:00
cpu Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
cris include: Include headers where needed 2023-01-08 01:54:22 -05:00
cxl hw/cxl: Clean up includes 2023-02-08 07:16:23 +01:00
display include: Include headers where needed 2023-01-08 01:54:22 -05:00
dma include: Include headers where needed 2023-01-08 01:54:22 -05:00
firmware hw/smbios: add core_count2 to smbios table type 4 2022-11-07 14:08:17 -05:00
gpio hw/gpio: replace HWADDR_PRIx with PRIx64 2022-05-25 10:31:33 +02:00
hyperv hw/hyperv/vmbus: Remove unused vmbus_load/save_req() 2022-05-30 19:49:42 +02:00
i2c hw/i2c/versatile_i2c: Replace TYPE_VERSATILE_I2C -> TYPE_ARM_SBCON_I2C 2023-01-23 13:32:38 +00:00
i386 x86: don't let decompressed kernel image clobber setup_data 2023-01-28 06:21:29 -05:00
ide virtio,pc,pci: features, cleanups, fixes 2023-01-09 10:07:12 +00:00
input hw/input: Clean up includes 2023-02-08 07:16:23 +01:00
intc target/arm: Declare CPU <-> NVIC helpers in 'hw/intc/armv7m_nvic.h' 2023-02-16 16:00:47 +00:00
ipack ipack: Rename ipack_bus_new_inplace() to ipack_bus_init() 2021-09-30 13:42:10 +01:00
ipmi Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
isa hw/isa/isa-bus: Turn isa_build_aml() into qbus_build_aml() 2023-01-27 11:47:02 -05:00
kvm target/i386: always create kvmclock device 2020-09-30 19:11:36 +02:00
loongarch hw/loongarch/virt: Add cfi01 pflash device 2022-12-15 15:46:12 +08:00
m68k hw/m68k/mcf: Add missing 'exec/hwaddr.h' header 2022-02-21 10:35:13 +01:00
mem acpi/nvdimm: Define trace events for NVDIMM and substitute nvdimm_debug() 2022-07-26 10:37:46 -04:00
mips hw/mips/bootloader: Handle buffers as opaque arrays 2023-01-13 09:32:32 +01:00
misc Don't include headers already included by qemu/osdep.h 2023-02-08 07:28:05 +01:00
net hw/arm/npcm7xx: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
nubus Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
nvram aspeed queue: 2023-02-07 20:13:38 +00:00
openrisc hw/openrisc: Split re-usable boot time apis out to boot.c 2022-09-04 07:02:56 +01:00
pci Don't include headers already included by qemu/osdep.h 2023-02-08 07:28:05 +01:00
pci-bridge pci/pci_expander_bridge: For CXL HB delay the HB register memory region setup. 2022-06-09 19:32:49 -04:00
pci-host ppc/pnv/pci: Update PHB5 version register 2023-02-05 06:40:28 -03:00
ppc include/hw/ppc include/hw/pci-host: Drop extra typedefs 2023-01-20 07:25:22 +01:00
rdma qapi: introduce x-query-rdma QMP command 2021-11-02 15:55:14 +00:00
remote include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
riscv hw/riscv: change riscv_compute_fdt_addr() semantics 2023-02-07 08:19:23 +10:00
rtc hw/rtc/mc146818rtc: Make the mc146818 RTC device target independent 2023-01-13 16:22:57 +01:00
rx Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
s390x s390x/pv: Add support for asynchronous teardown for reboot 2023-02-27 09:15:39 +01:00
scsi include/hw/scsi/scsi.h: Remove unused scsi_legacy_handle_cmdline() prototype 2022-10-22 23:21:16 +02:00
sd hw/arm/npcm7xx: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
sensor hw/sensor: Add IC_DEVICE_ID to ISL voltage regulators 2022-07-14 16:24:38 +02:00
sh4 hw/intc/sh_intc: Inline and drop sh_intc_source() function 2021-10-30 18:39:37 +02:00
southbridge include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
sparc hw: Replace anti-social QOM type names 2021-03-19 15:18:43 +01:00
ssi Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
timer include: Include headers where needed 2023-01-08 01:54:22 -05:00
tricore Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
usb include: Include headers where needed 2023-01-08 01:54:22 -05:00
vfio vfio/migration: Remove VFIO migration protocol v1 2023-02-16 12:13:46 -07:00
virtio virtio-scsi: reset SCSI devices from main loop thread 2023-02-23 19:49:35 +01:00
watchdog hw/watchdog/wdt_aspeed: Log unimplemented registers as UNIMP level 2023-02-07 09:02:05 +01:00
xen hw/xen: use G_GNUC_PRINTF/SCANF for various functions 2023-01-11 10:44:33 +01:00
xtensa Include hw/irq.h a lot less 2019-08-16 13:31:52 +02:00
boards.h virtio,pc,pci: features, cleanups, fixes 2023-01-09 10:07:12 +00:00
clock.h host-utils: add 128-bit quotient support to divu128/divs128 2021-10-27 17:10:00 -07:00
elf_ops.h treewide: Remove the unnecessary space before semicolon 2022-10-24 13:41:10 +02:00
fw-path-provider.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
hotplug.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
hw.h compiler.h: replace QEMU_NORETURN with G_NORETURN 2022-04-21 17:03:51 +04:00
ide.h include/hw/ide: Unexport pci_piix3_xen_ide_unplug() 2022-06-09 14:47:42 +01:00
irq.h hw/core/irq: remove unused 'qemu_irq_split' function 2022-04-21 11:37:04 +01:00
loader-fit.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
loader.h hw/core/loader: Remove declarations of option_rom_has_mr/rom_file_has_mr 2023-02-07 09:02:04 +01:00
nmi.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
or-irq.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
pcmcia.h Use OBJECT_DECLARE_TYPE when possible 2020-09-18 14:12:32 -04:00
platform-bus.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
ptimer.h ptimer: Rename PTIMER_POLICY_DEFAULT to PTIMER_POLICY_LEGACY 2022-05-19 16:19:03 +01:00
qdev-clock.h clock: Add ClockEvent parameter to callbacks 2021-03-08 17:20:01 +00:00
qdev-core.h hw: Remove device_legacy_reset() 2022-12-16 15:55:32 +00:00
qdev-dma.h Supply missing header guards 2019-06-12 13:20:21 +02:00
qdev-properties-system.h qdev: Reuse DEFINE_PROP in all DEFINE_PROP_* macros 2020-12-18 15:20:17 -05:00
qdev-properties.h qdev-properties: Add a new macro with bitmask check for uint64_t property 2022-05-14 12:32:41 +02:00
register.h hw/core/register: Add more 64-bit utilities 2021-09-01 11:59:12 +10:00
registerfields.h hw/registerfields: Add shared fields macros 2022-06-22 09:49:34 +02:00
resettable.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
stream.h hw/core/stream: Rename StreamSlave as StreamSink 2020-12-10 12:15:04 -05:00
sysbus.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
usb.h hw/usb: fix tab indentation 2022-11-08 11:13:48 +01:00
vmstate-if.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00