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qemu-irix/hw
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Sascha Silbe fe345a3d5d watchdog/diag288: avoid race condition on expired watchdog 
When configured to inject an NMI, watchdog_perform_action() may cause
the BQL to be temporarily relinquished (inject_nmi() → ... →
s390_nmi() → s390_cpu_restart() → run_on_cpu()). When the guest issues
diag 288 again in response to the NMI, the diag 288 operation will
race against wdt_diag288_reset(). Depending on scheduler behaviour,
wdt_diag288_reset() may be run after the guest issued a diag 288
Init. As a result, we will cancel the timer the guest just set up. The
effect observed by the guest is that a second expiry does not trigger
the watchdog action and diag 288 Change operations fail.

Fix this by resetting the timer _before_ invoking the action.

Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Acked-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
 		2016-03-01 12:15:28 +01:00
..
9pfs all: Clean up includes 2016-02-23 12:43:05 +00:00
acpi ich9: Remove enable_tco arguments from init functions 2016-02-25 13:14:19 +02:00
alpha alpha: Clean up includes 2016-01-29 15:07:23 +00:00
arm raspi: fix SD card with recent sdhci changes 2016-02-26 15:09:42 +00:00
audio all: Clean up includes 2016-02-23 12:43:05 +00:00
block virtio-blk: do not use vring in dataplane 2016-02-25 13:14:18 +02:00
bt hw: Clean up includes 2016-01-29 15:07:25 +00:00
char virtio: introduce qemu_get/put_virtqueue_element 2016-02-06 20:44:08 +02:00
core migration: allow machine to enforce configuration section migration 2016-02-28 16:19:02 +11:00
cpu hw: Clean up includes 2016-01-29 15:07:25 +00:00
cris cris: Clean up includes 2016-01-29 15:07:24 +00:00
display all: Clean up includes 2016-02-23 12:43:05 +00:00
dma etraxfs_dma: Dont forward zero-length payload to clients 2016-02-20 00:17:48 +01:00
gpio ARM: PL061: Checking register r/w accesses to reserved area 2016-02-26 15:09:42 +00:00
i2c hw: Clean up includes 2016-01-29 15:07:25 +00:00
i386 q35: No need to check gigabyte_align 2016-02-25 13:14:19 +02:00
ide ahci: prohibit "restarting" the FIS or CLB engines 2016-02-10 13:29:40 -05:00
input cuda: port SET_DEVICE_LIST command to new framework 2016-02-17 09:59:30 +11:00
intc xics: report errors with the QEMU Error API 2016-02-28 16:19:02 +11:00
ipack hw: Clean up includes 2016-01-29 15:07:25 +00:00
ipmi ipmi: sensor number should not exceed MAX_SENSORS 2016-02-16 16:41:25 +01:00
isa ich9: Remove enable_tco arguments from init functions 2016-02-25 13:14:19 +02:00
lm32 lm32: Clean up includes 2016-01-29 15:07:22 +00:00
m68k m68k: Clean up includes 2016-01-29 15:07:24 +00:00
mem move get_current_ram_size to virtio-balloon.c 2016-02-23 12:55:16 +02:00
microblaze microblaze: Clean up includes 2016-01-28 11:13:13 +00:00
mips magnum: disable floppy DMA for now 2016-02-03 11:28:57 -05:00
misc dbdma: warn when using unassigned channel 2016-02-28 16:19:02 +11:00
moxie moxie: Clean up includes 2016-01-29 15:07:25 +00:00
net all: Clean up includes 2016-02-23 12:43:05 +00:00
nvram fw_cfg: unbreak migration compatibility for 2.4 and earlier machines 2016-02-26 10:06:40 +01:00
openrisc openrisc: Clean up includes 2016-01-29 15:07:24 +00:00
pci pci core: function pci_bus_init() cleanup 2016-02-25 13:14:18 +02:00
pci-bridge aer: impove pcie_aer_init to support vfio device 2016-02-19 09:42:28 -07:00
pci-host vhost, virtio, pci, pxe 2016-02-19 10:50:37 +00:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc xics: report errors with the QEMU Error API 2016-02-28 16:19:02 +11:00
s390x s390x: remove s390-zipl.rom 2016-02-11 15:15:47 +03:00
scsi virtio-scsi: do not use vring in dataplane 2016-02-25 13:14:19 +02:00
sd sdhci: add quirk property for card insert interrupt status on Raspberry Pi 2016-02-26 15:09:42 +00:00
sh4 sh4: Clean up includes 2016-01-29 15:07:24 +00:00
smbios hw: Clean up includes 2016-01-29 15:07:25 +00:00
sparc dma: remove now useless DMA_* functions 2016-02-03 11:28:58 -05:00
sparc64 dma: remove now useless DMA_* functions 2016-02-03 11:28:58 -05:00
ssi hw: Clean up includes 2016-01-29 15:07:25 +00:00
timer tusb6010: move from hw/timer to hw/usb 2016-02-23 10:38:00 +01:00
tpm hw: Clean up includes 2016-01-29 15:07:25 +00:00
tricore tricore: Clean up includes 2016-01-29 15:07:25 +00:00
unicore32 unicore: Clean up includes 2016-01-29 15:07:22 +00:00
usb usb-redirect: Avoid double free of data 2016-02-29 11:45:26 +01:00
vfio all: Clean up includes 2016-02-23 12:43:05 +00:00
virtio vring: remove 2016-02-25 13:14:19 +02:00
watchdog watchdog/diag288: avoid race condition on expired watchdog 2016-03-01 12:15:28 +01:00
xen xen: drop XenXC and associated interface wrappers 2016-02-10 12:01:24 +00:00
xenpv xen: Clean up includes 2016-01-29 15:07:23 +00:00
xtensa xtensa: Clean up includes 2016-01-29 15:07:24 +00:00
Makefile.objs Add a base IPMI interface 2015-12-22 18:39:19 +02:00