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b4370df2b1
linux/drivers/hv
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Vitaly Kuznetsov b4370df2b1 Drivers: hv: vmbus: add special crash handler 
Full kernel hang is observed when kdump kernel starts after a crash. This
hang happens in vmbus_negotiate_version() function on
wait_for_completion() as Hyper-V host (Win2012R2 in my testing) never
responds to CHANNELMSG_INITIATE_CONTACT as it thinks the connection is
already established. We need to perform some mandatory minimalistic
cleanup before we start new kernel.

Reported-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-04 22:28:38 -07:00
..
channel_mgmt.c Drivers: hv: vmbus: Implement NUMA aware CPU affinity for channels 2015-06-01 10:56:31 +09:00
channel.c Drivers: hv: vmbus: Allocate ring buffer memory in NUMA aware fashion 2015-06-12 16:58:33 -07:00
connection.c Drivers: hv: vmbus:Update preferred vmbus protocol version to windows 10. 2015-06-01 06:38:21 +09:00
hv_balloon.c Drivers: hv: balloon: check if ha_region_mutex was acquired in MEM_CANCEL_ONLINE case 2015-06-01 06:38:21 +09:00
hv_fcopy.c Drivers: hv: utils: unify driver registration reporting 2015-05-24 12:17:42 -07:00
hv_kvp.c Drivers: hv: utils: unify driver registration reporting 2015-05-24 12:17:42 -07:00
hv_snapshot.c Drivers: hv: utils: unify driver registration reporting 2015-05-24 12:17:42 -07:00
hv_util.c Drivers: hv: util: On device remove, close the channel after de-initializing the service 2015-03-01 19:31:02 -08:00
hv_utils_transport.c Drivers: hv: util: introduce hv_utils_transport abstraction 2015-05-24 12:17:41 -07:00
hv_utils_transport.h Drivers: hv: util: introduce hv_utils_transport abstraction 2015-05-24 12:17:41 -07:00
hv.c Drivers: hv: don't do hypercalls when hypercall_page is NULL 2015-08-04 22:25:29 -07:00
hyperv_vmbus.h Drivers: hv: vmbus: Implement the protocol for tearing down vmbus state 2015-05-24 12:18:24 -07:00
Kconfig
Makefile Drivers: hv: util: introduce hv_utils_transport abstraction 2015-05-24 12:17:41 -07:00
ring_buffer.c Drivers: hv: vmbus: Enable interrupt driven flow control 2014-09-23 23:31:22 -07:00
vmbus_drv.c Drivers: hv: vmbus: add special crash handler 2015-08-04 22:28:38 -07:00