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ae46e23964
qemu/hw
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Paul Donohue ae46e23964 mc146818rtc: Reset the periodic timer on load 
When loading a VM from a snapshot or migration, clock changes can cause
the periodic timer to stall or loop rapidly.

qemu-timer has a reset notifier mechanism that is used to avoid timer
stalls or loops if the host clock changes while the VM is running when
using QEMU_CLOCK_HOST.  However, when loading a snapshot or migration,
qemu-timer is initialized and fires the reset notifier before
mc146818rtc is initialized and has registered its reset handler.  In
addition, this mechanism isn't used when using QEMU_CLOCK_REALTIME,
which might also change when loading a snapshot or migration.

To correct that problem, this commit resets the periodic timer after
loading from a snapshot or migration if the clock has either jumped
backward or has jumped forward by more than the clock jump limit that
is used by the reset notifier code in qemu-timer.

Signed-off-by: Paul Donohue <qemu-git@PaulSD.com>
Message-Id: <20150612141013.GE2749@TopQuark.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-19 12:27:14 +02:00
..
9pfs virtio-9p-device: move qdev properties into virtio-9p-device.c 2015-06-10 18:15:34 +02:00
acpi migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
alpha hw/alpha/typhoon.c: Fix misusing qemu_allocate_irqs for single irq 2015-06-03 14:21:24 +03:00
arm hw/arm/virt-acpi-build: Add SPCR table 2015-06-15 18:06:11 +01:00
audio gus: clean up MemoryRegionPortio 2015-04-27 18:24:18 +02:00
block migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
bt bt-sdp: fix broken uuids power-of-2 calculation 2015-04-28 15:36:08 +02:00
char migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
core nmi: Implement inject_nmi() for non-monitor context use 2015-06-11 17:45:50 +02:00
cpu icc_bus: fix typo ICC_BRIGDE -> ICC_BRIDGE 2014-11-03 19:51:56 +03:00
cris cris: memory: Replace memory_region_init_ram with memory_region_allocate_system_memory 2015-04-11 20:03:57 +10:00
display virtio-gpu: pci support bits and virtio-vga. 2015-06-16 10:35:43 +01:00
dma dma/rc4030: convert to QOM 2015-06-11 10:13:29 +01:00
gpio pl061: fix wrong calculation of GPIOMIS register 2015-06-02 14:56:25 +01:00
i2c ACPI: split CONFIG_ACPI into 4 pieces 2015-05-29 11:28:59 +01:00
i386 Disable section footers on older machine types 2015-06-12 06:54:01 +02:00
ide migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
input migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
intc arm_gic: gic_update should always update all cores 2015-06-15 18:06:07 +01:00
ipack pci: Trivial device model conversions to realize 2015-02-26 12:42:16 +01:00
isa virtio-gpu: pci support bits and virtio-vga. 2015-06-16 10:35:43 +01:00
lm32 hw/lm32/milkymist.c: Fix misusing qemu_allocate_irqs for single irq 2015-06-03 14:21:24 +03:00
m68k m68k: memory: Replace memory_region_init_ram with memory_region_allocate_system_memory 2015-03-25 14:35:24 +01:00
mem pc-dimm: don't assert if pc-dimm alignment != hotpluggable mem range size 2015-06-04 11:20:34 +02:00
microblaze microblaze: fix memory leak 2015-04-30 16:06:18 +03:00
mips net/dp8393x: add PROM to store MAC address 2015-06-11 10:13:30 +01:00
misc macio: Convert to realize() 2015-06-03 23:56:49 +02:00
moxie memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
net -----BEGIN PGP SIGNATURE----- 2015-06-12 15:39:05 +01:00
nvram fw_cfg: prohibit insertion of duplicate fw_cfg file names 2015-06-10 08:00:37 +02:00
openrisc hw/core/loader: implement address translation in uimage loader 2014-11-03 00:59:10 +03:00
pci virtio-vga: add '-vga virtio' support 2015-06-12 10:13:23 +02:00
pci-bridge hw/pxb: add numa_node parameter 2015-06-03 18:19:18 +02:00
pci-host migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
pcmcia hmp: Remove "info pcmcia" 2014-10-24 12:19:11 +01:00
ppc fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparc 2015-06-10 08:00:37 +02:00
s390x pc, acpi, virtio 2015-06-11 15:33:38 +01:00
scsi migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
sd hw/sd/pxa2xx_mmci: Stop using old_mmio in MemoryRegionOps 2015-06-15 18:06:09 +01:00
sh4 sh4/r2d: convert to new MMIO accessor style 2015-06-12 12:02:48 +02:00
sparc fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparc 2015-06-10 08:00:37 +02:00
sparc64 fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparc 2015-06-10 08:00:37 +02:00
ssi omap: Fix warnings from Sparse 2015-03-19 11:11:55 +03:00
timer mc146818rtc: Reset the periodic timer on load 2015-06-19 12:27:14 +02:00
tpm TPM2 ACPI table support 2015-06-01 14:18:54 +02:00
tricore target-tricore: check return value before using it 2014-11-02 10:04:34 +03:00
unicore32 hw/unicore32/puv3.c: Fix misusing qemu_allocate_irqs for single irq 2015-06-03 14:21:24 +03:00
usb migration: Use normal VMStateDescriptions for Subsections 2015-06-12 06:53:57 +02:00
vfio hw/vfio/platform: replace g_malloc0_n by g_new0 2015-06-11 14:22:57 +01:00
virtio virtio-gpu: pci support bits and virtio-vga. 2015-06-16 10:35:43 +01:00
watchdog watchdog: Add new Virtual Watchdog action INJECT-NMI 2015-06-11 17:45:50 +02:00
xen xen_backend: Remove unused error handling of qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
xenpv hw: Convert from BlockDriverState to BlockBackend, mostly 2014-10-20 14:02:25 +02:00
xtensa xtensa: Remove superfluous '\n' around error_report() 2015-03-10 08:15:33 +03:00
Makefile.objs vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00