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aad4dce934
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Jason Wang aad4dce934 vhost_net: start/stop guest notifiers properly 
commit a9f98bb5eb vhost: multiqueue
support changed the order of stopping the device. Previously
vhost_dev_stop would disable backend and only afterwards, unset guest
notifiers. We now unset guest notifiers while vhost is still
active. This can lose interrupts causing guest networking to fail. In
particular, this has been observed during migration.

To adapt this, several other changes are needed:
- remove the hdev->started assertion in vhost.c since we may want to
start the guest notifiers before vhost starts and stop the guest
notifiers after vhost is stopped.
- introduce the vhost_net_set_vq_index() and call it before setting
guest notifiers. This is used to guarantee vhost_net has the correct
virtqueue index when setting guest notifiers.

Cc: qemu-stable@nongnu.org
Reported-by: "Zhangjie (HZ)" <zhangjie14@huawei.com>
Tested-by: William Dauchy <wdauchy@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-09-02 17:33:37 +03:00
..
9pfs virtio-9p: use virtio wrappers to access headers 2014-06-29 19:39:43 +03:00
acpi pcihp: fix possible array out of bounds 2014-08-25 00:16:06 +02:00
alpha iommu: add is_write as a parameter to the translate function of MemoryRegionIOMMUOps 2014-08-28 23:10:22 +02:00
arm arm: stellaris: Remove misleading address_space_mem var 2014-08-19 19:02:40 +01:00
audio SCSI changes that enable sending vendor-specific commands via virtio-scsi. 2014-08-19 13:00:57 +01:00
block SCSI changes that enable sending vendor-specific commands via virtio-scsi. 2014-08-19 13:00:57 +01:00
bt l2cap: fix access to freed memory 2014-08-15 19:12:48 +04:00
char SCSI changes that enable sending vendor-specific commands via virtio-scsi. 2014-08-19 13:00:57 +01:00
core intel-iommu: fix coding style issues around in q35.c and machine.c 2014-08-28 23:10:22 +02:00
cpu icc_bus: QOM'ify ICC 2013-12-24 18:02:18 +01:00
cris machine: Conversion of QEMUMachineInitArgs to MachineState 2014-05-28 17:35:01 +02:00
display memory: convert memory_region_destroy to object_unparent 2014-08-18 12:06:20 +02:00
dma hw: Fix qemu_allocate_irqs() leaks 2014-06-30 21:13:30 +02:00
gpio savevm: Remove all the unneeded version_minimum_id_old (arm) 2014-05-13 16:09:35 +01:00
i2c savevm: Remove all the unneeded version_minimum_id_old (rest) 2014-05-14 15:24:51 +02:00
i386 intel-iommu: add IOTLB using hash table 2014-08-28 23:10:22 +02:00
ide SCSI changes that enable sending vendor-specific commands via virtio-scsi. 2014-08-19 13:00:57 +01:00
input input: fix jumpy mouse cursor with USB mouse emulation 2014-07-01 13:26:37 +02:00
intc intc: i8259: Convert Array allocation to g_new0 2014-08-15 18:54:55 +04:00
ipack memory: remove memory_region_destroy 2014-08-18 12:06:21 +02:00
isa isa-bus: don't use 'Yoda conditions' 2014-08-15 18:54:06 +04:00
lm32 machine: Conversion of QEMUMachineInitArgs to MachineState 2014-05-28 17:35:01 +02:00
m68k machine: Conversion of QEMUMachineInitArgs to MachineState 2014-05-28 17:35:01 +02:00
mem pc-dimm: fix up error message 2014-08-14 13:22:00 +02:00
microblaze ssi: Name the CS GPIO 2014-05-28 17:36:21 +02:00
mips memory: convert memory_region_destroy to object_unparent 2014-08-18 12:06:20 +02:00
misc SCSI changes that enable sending vendor-specific commands via virtio-scsi. 2014-08-19 13:00:57 +01:00
moxie hw/moxie/moxiesim.c: Remove unused moxie_intc_create() 2014-06-24 20:01:24 +04:00
net vhost_net: start/stop guest notifiers properly 2014-09-02 17:33:37 +03:00
nvram spapr: Fix RTAS token numbers 2014-06-27 13:48:22 +02:00
openrisc machine: Conversion of QEMUMachineInitArgs to MachineState 2014-05-28 17:35:01 +02:00
pci pci: avoid losing config updates to MSI/MSIX cap regs 2014-09-02 17:28:26 +03:00
pci-bridge ioh3420: remove unused ioh3420_init() declaration 2014-09-02 17:28:26 +03:00
pci-host intel-iommu: add context-cache to cache context-entry 2014-08-28 23:10:22 +02:00
pcmcia hw: Fix qemu_allocate_irqs() leaks 2014-06-30 21:13:30 +02:00
ppc iommu: add is_write as a parameter to the translate function of MemoryRegionIOMMUOps 2014-08-28 23:10:22 +02:00
s390x s390x/css: reflect cpa in scsw 2014-07-08 15:08:03 +02:00
scsi memory: remove memory_region_destroy 2014-08-18 12:06:21 +02:00
sd sd: sdhci: Fix ADMA dma_memory_read access 2014-08-04 14:41:54 +01:00
sh4 hw: Fix qemu_allocate_irqs() leaks 2014-06-30 21:13:30 +02:00
sparc tcx: move initialisation from realizefn to initfn 2014-06-05 20:51:57 +01:00
sparc64 sun4u: switch second PCI-ebus bridge BAR over to PCI IO space 2014-08-17 13:12:52 +01:00
ssi ssi: xilinx_spi: Initialise CS GPIOs as NULL 2014-08-15 18:54:40 +04:00
timer hw/timer: Move extern declaration from .c to .h file 2014-08-09 00:06:32 +04:00
tpm Add ACPI tables for TPM 2014-08-25 00:16:06 +02:00
unicore32 machine: Conversion of QEMUMachineInitArgs to MachineState 2014-05-28 17:35:01 +02:00
usb SCSI changes that enable sending vendor-specific commands via virtio-scsi. 2014-08-19 13:00:57 +01:00
virtio vhost_net: start/stop guest notifiers properly 2014-09-02 17:33:37 +03:00
watchdog memory: remove memory_region_destroy 2014-08-18 12:06:21 +02:00
xen memory: remove memory_region_destroy 2014-08-18 12:06:21 +02:00
xenpv machine: Conversion of QEMUMachineInitArgs to MachineState 2014-05-28 17:35:01 +02:00
xtensa hw/xtensa/xtfpga: implement initrd loading 2014-06-29 02:32:42 +04:00
Makefile.objs pc: implement pc-dimm device abstraction 2014-06-19 16:41:47 +03:00