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| author |   Olaf Hering <olaf@aepfle.de> | 2015-12-14 16:01:42 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-14 19:15:05 -0800 |
| commit | ed9ba608e4851144af8c7061cbb19f751c73e998 (patch) | |
| tree | 293b915125a0ee9731dfc896ff394fd291a33c8a /scripts | |
| parent | drivers:hv: Define the channel type for Hyper-V PCI Express pass-through (diff) | |
| download | linux-dev-ed9ba608e4851144af8c7061cbb19f751c73e998.tar.xz linux-dev-ed9ba608e4851144af8c7061cbb19f751c73e998.zip | |
Drivers: hv: vss: run only on supported host versions
The Backup integration service on WS2012 has appearently trouble to
negotiate with a guest which does not support the provided util version.
Currently the VSS driver supports only version 5/0. A WS2012 offers only
version 1/x and 3/x, and vmbus_prep_negotiate_resp correctly returns an
empty icframe_vercnt/icmsg_vercnt. But the host ignores that and
continues to send ICMSGTYPE_NEGOTIATE messages. The result are weird
errors during boot and general misbehaviour.
Check the Windows version to work around the host bug, skip hv_vss_init
on WS2012 and older.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions