OpenE2K/qemu-e2k
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218fd37c68
qemu-e2k/hw
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Pavel Butsykin 218fd37c68 ide: don't lose pending dma state 
If the migration occurs after the IDE DMA has been set up but before it
has been initiated, the state gets lost upon save/restore. Specifically,
->dma_cb callback gets cleared, so, when the guest eventually starts bus
mastering, the DMA never completes, causing the guest to time out the
operation.

OTOH all the infrastructure is already in place to restart the DMA if
the migration happens while the DMA is in progress.

So reuse that infrastructure, by setting bus->error_status based on
->dma_cmd in pre_save if ->dma_cb callback is already set but DMAING is
clear. This will indicate the need for restart and make sure ->dma_cb
is restored in ide_restart_bh(); howeover since DMAING is clear the state
upon restore will be exactly "ready for DMA" as before the save.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1459924806-306-2-git-send-email-den@openvz.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-04-12 16:47:52 -04:00
..
9pfs util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
acpi Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
alpha util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
arm hw/arm/bcm2836: Wire up CPU timer interrupts correctly 2016-04-04 17:33:51 +01:00
audio Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
block virtio: merge virtio_queue_aio_set_host_notifier_handler with virtio_queue_set_aio 2016-04-07 19:57:33 +03:00
bt util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
char Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
core Sort the fw_cfg file list 2016-04-07 19:57:33 +03:00
cpu include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
cris util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
display virtio-gpu: block live migration 2016-04-11 12:36:34 +02:00
dma Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
gpio hw/gpio: Add the emulation of gpio_key 2016-03-30 17:27:22 +01:00
i2c i.MX: Add missing descriptions in devices. 2016-03-16 17:42:18 +00:00
i386 Sort the fw_cfg file list 2016-04-07 19:57:33 +03:00
ide ide: don't lose pending dma state 2016-04-12 16:47:52 -04:00
input ps2kbd: default to scancode_set 2, as with KBD_CMD_RESET 2016-04-08 00:07:36 +02:00
intc Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
ipack include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
ipmi include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
isa hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
lm32 util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
m68k hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
mem include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
microblaze util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
mips hw/mips/cps: enable ITU for multithreading processors 2016-03-30 09:14:00 +01:00
misc MIPS patches 2016-04-08 2016-04-08 13:45:52 +01:00
moxie hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
net net: stellaris_enet: check packet length against receive buffer 2016-04-11 14:22:33 +01:00
nvram Sort the fw_cfg file list 2016-04-07 19:57:33 +03:00
openrisc hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
pci util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
pci-bridge hw/pci-bridge: Add missing unref in case register-bus fails 2016-04-07 19:57:33 +03:00
pci-host include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc ppc patch queue for 2016-04-08 2016-04-08 11:54:19 +01:00
s390x hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
scsi virtio: merge virtio_queue_aio_set_host_notifier_handler with virtio_queue_set_aio 2016-04-07 19:57:33 +03:00
sd Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND 2016-03-22 22:20:17 +01:00
sh4 hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
smbios include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
sparc util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
sparc64 util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
ssi hw: Clean up includes 2016-01-29 15:07:25 +00:00
timer hw/timer: Revert "hpet: inverse polarity when pin above ISA_NUM_IRQS" 2016-04-08 00:07:43 +02:00
tpm include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
tricore hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
unicore32 hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
usb * Log filtering from Alex and Peter 2016-03-24 21:42:40 +00:00
vfio VFIO updates 2016-03-28 2016-03-29 17:39:41 +01:00
virtio virtio: merge virtio_queue_aio_set_host_notifier_handler with virtio_queue_set_aio 2016-04-07 19:57:33 +03:00
watchdog util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
xen util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
xenpv xen: Clean up includes 2016-01-29 15:07:23 +00:00
xtensa hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
Makefile.objs Add a base IPMI interface 2015-12-22 18:39:19 +02:00