mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
2afdc790ec
qemu/include/hw
History
Peter Maydell 032cfe6a79 pl031: Correctly migrate state when using -rtc clock=host 
The PL031 RTC tracks the difference between the guest RTC
and the host RTC using a tick_offset field. For migration,
however, we currently always migrate the offset between
the guest and the vm_clock, even if the RTC clock is not
the same as the vm_clock; this was an attempt to retain
migration backwards compatibility.

Unfortunately this results in the RTC behaving oddly across
a VM state save and restore -- since the VM clock stands still
across save-then-restore, regardless of how much real world
time has elapsed, the guest RTC ends up out of sync with the
host RTC in the restored VM.

Fix this by migrating the raw tick_offset. To retain migration
compatibility as far as possible, we have a new property
migrate-tick-offset; by default this is 'true' and we will
migrate the true tick offset in a new subsection; if the
incoming data has no subsection we fall back to the old
vm_clock-based offset information, so old->new migration
compatibility is preserved. For complete new->old migration
compatibility, the property is set to 'false' for 4.0 and
earlier machine types (this will only affect 'virt-4.0'
and below, as none of the other pl031-using machines are
versioned).

Reported-by: Russell King <rmk@armlinux.org.uk>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 20190709143912.28905-1-peter.maydell@linaro.org
2019-07-15 14:17:04 +01:00
..
acpi hw/acpi: extract acpi_add_rom_blob() 2019-06-16 16:16:52 -04:00
adc STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00
arm hw/misc/aspeed_xdma: New device 2019-07-01 17:29:00 +01:00
audio Clean up header guards that don't match their file name 2019-05-13 08:58:55 +02:00
block Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
char Normalize position of header guard 2019-06-12 13:20:20 +02:00
core hw/core/split-irq: Device that splits IRQ lines 2018-03-02 11:03:45 +00:00
cpu Clean up includes 2019-05-13 08:58:55 +02:00
cris char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
display edid: add xmax + ymax properties 2019-06-13 09:34:38 +02:00
dma Normalize position of header guard 2019-06-12 13:20:20 +02:00
firmware machine: Refactor smp-related call chains to pass MachineState 2019-07-05 17:07:36 -03:00
gpio hw/gpio/nrf51_gpio: Add nRF51 GPIO peripheral 2019-01-07 15:23:47 +00:00
hyperv hyperv: process POST_MESSAGE hypercall 2018-10-19 13:44:14 +02:00
i2c hw/i2c/bitbang_i2c: Use in-place rather than malloc'd bitbang_i2c_interface struct 2019-07-03 10:51:35 +02:00
i386 i386: Make unversioned CPU models be aliases 2019-07-05 17:08:04 -03:00
ide hw/ide: drop iov field from IDEDMA 2019-02-22 09:42:13 +00:00
input hw/devices: Move TI touchscreen declarations into a new header 2019-04-29 17:57:21 +01:00
intc Clean up header guards that don't match their file name 2019-05-13 08:58:55 +02:00
ipack ipack: Update e-mail address 2016-05-18 15:04:27 +03:00
ipmi Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
isa Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
kvm Supply missing header guards 2019-06-12 13:20:21 +02:00
lm32 Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
m68k Supply missing header guards 2019-06-12 13:20:21 +02:00
mem nvdimm: Rename AcpiNVDIMMState into NVDIMMState 2019-03-11 10:44:21 -03:00
mips Supply missing header guards 2019-06-12 13:20:21 +02:00
misc hw/misc/aspeed_xdma: New device 2019-07-01 17:29:00 +01:00
net Normalize position of header guard 2019-06-12 13:20:20 +02:00
nvram hw/nvram/fw_cfg: Add fw_cfg_arch_key_name() 2019-05-23 14:10:31 +02:00
pci pcie: consistent names for function args 2019-07-12 10:56:26 -04:00
pci-bridge Supply missing header guards 2019-06-12 13:20:21 +02:00
pci-host ppc patch queue 2019-06-12 2019-06-12 14:43:47 +01:00
ppc spapr/xive: simplify spapr_irq_init_device() to remove the emulated init 2019-07-02 09:43:58 +10:00
rdma {hmp, hw/pvrdma}: Expose device internals via monitor interface 2019-03-16 15:52:44 +02:00
riscv hw/riscv: Add support for loading a firmware 2019-06-27 02:47:06 -07:00
s390x vfio-ccw: support async command subregion 2019-06-24 17:27:57 +02:00
scsi scsi-disk: Use qdev_prop_drive_iothread 2019-06-04 15:22:22 +02:00
sd Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
semihosting semihosting: split console_out into string and char versions 2019-06-12 17:53:22 +01:00
sh4 Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sparc Supply missing header guards 2019-06-12 13:20:21 +02:00
ssi aspeed/smc: add a 'sdram_base' property 2019-07-01 17:28:59 +01:00
timer pl031: Correctly migrate state when using -rtc clock=host 2019-07-15 14:17:04 +01:00
tricore Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
unicore32 hw/unicore32: restrict hw addr defines to source file 2017-12-18 17:07:02 +03:00
usb usb: Add basic code to emulate Chipidea USB IP 2018-02-09 10:40:30 +00:00
vfio vfio-common.h: Remove inaccurate comment 2019-07-02 13:12:53 -06:00
virtio virtio-balloon: fix QEMU 4.0 config size migration incompatibility 2019-07-12 10:56:26 -04:00
watchdog aspeed: Link SCU to the watchdog 2019-07-01 17:29:00 +01:00
xen xen: Import other xen/io/*.h 2019-06-24 10:42:30 +01:00
xtensa Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
boards.h machine: Refactor smp_parse() in vl.c as MachineClass::smp_parse() 2019-07-05 17:08:04 -03:00
bt.h char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
elf_ops.h elf-ops.h: Add get_elf_note_type() 2019-02-05 16:50:16 +01:00
empty_slot.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
fw-path-provider.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
hotplug.h qom: make interface types abstract 2018-12-11 15:45:22 -02:00
hw.h Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
ide.h ide/via: Rename functions to match device name 2019-01-25 14:52:12 -05:00
irq.h hw/core/split-irq: Device that splits IRQ lines 2018-03-02 11:03:45 +00:00
loader-fit.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
loader.h elf: Add optional function ptr to load_elf() to parse ELF notes 2019-02-05 16:50:16 +01:00
nmi.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
or-irq.h hw/core/or-irq: Support more than 16 inputs to an OR gate 2018-06-15 15:23:34 +01:00
pcmcia.h hw/pcmcia: Remove PCMCIACardState from "qemu/typedefs.h" 2019-01-22 05:14:32 +01:00
platform-bus.h platform-bus-device: use device plug callback instead of machine_done notifier 2018-05-10 18:10:56 +01:00
ptimer.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qdev-core.h qdev: add qdev_add_vm_change_state_handler() 2019-07-08 16:00:26 +02:00
qdev-dma.h Supply missing header guards 2019-06-12 13:20:21 +02:00
qdev-properties.h block: Add qdev_prop_drive_iothread property type 2019-06-04 15:22:22 +02:00
qdev.h
register.h hw: register: Run post_write hook on reset 2018-03-01 11:05:43 +00:00
registerfields.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
stream.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sysbus.h sysbus: add a sysbus_mmio_unmap() helper 2019-05-29 11:39:46 +10:00
usb.h qemu/queue.h: simplify reverse access to QTAILQ 2019-01-11 15:46:55 +01:00