linux-stable/drivers/hv
Dexuan Cui ddc9d357b9 Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23)
When a Linux hv_sock app tries to connect to a Service GUID on which no
host app is listening, a recent host (RS3+) sends a
CHANNELMSG_TL_CONNECT_RESULT (23) message to Linux and this triggers such
a warning:

unknown msgtype=23
WARNING: CPU: 2 PID: 0 at drivers/hv/vmbus_drv.c:1031 vmbus_on_msg_dpc

Actually Linux can safely ignore the message because the Linux app's
connect() will time out in 2 seconds: see VSOCK_DEFAULT_CONNECT_TIMEOUT
and vsock_stream_connect(). We don't bother to make use of the message
because: 1) it's only supported on recent hosts; 2) a non-trivial effort
is required to use the message in Linux, but the benefit is small.

So, let's not see the warning by silently ignoring the message.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-25 16:52:11 -05:00
..
channel.c Drivers: hv: vmbus: Fix virt_to_hvpfn() for X86_PAE 2019-08-20 12:49:57 -04:00
channel_mgmt.c Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23) 2020-01-25 16:52:11 -05:00
connection.c Drivers: hv: vmbus: Remove dependencies on guest page size 2019-11-21 20:10:45 -05:00
hv.c x86/hyperv: Initialize clockevents earlier in CPU onlining 2019-11-15 10:33:49 +01:00
hv_balloon.c hv_balloon: Balloon up according to request page number 2020-01-25 16:51:49 -05:00
hv_debugfs.c drivers: hv: vmbus: Introduce latency testing 2019-11-21 20:10:44 -05:00
hv_fcopy.c Drivers: hv: Specify receive buffer size using Hyper-V page size 2019-11-21 20:10:45 -05:00
hv_kvp.c Drivers: hv: Specify receive buffer size using Hyper-V page size 2019-11-21 20:10:45 -05:00
hv_snapshot.c Drivers: hv: Specify receive buffer size using Hyper-V page size 2019-11-21 20:10:45 -05:00
hv_trace.c hv: add SPDX license to trace 2018-03-28 13:24:56 +02:00
hv_trace.h tools: hv: Use the correct style for SPDX License Identifier 2019-08-17 15:29:34 -04:00
hv_trace_balloon.h hv_balloon: trace post_status 2018-03-06 09:57:17 -08:00
hv_util.c Drivers: hv: util: Specify ring buffer size using Hyper-V page size 2019-11-21 20:10:45 -05:00
hv_utils_transport.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 280 2019-06-05 17:36:36 +02:00
hv_utils_transport.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 280 2019-06-05 17:36:36 +02:00
hyperv_vmbus.h drivers: hv: vmbus: Introduce latency testing 2019-11-21 20:10:44 -05:00
Kconfig clocksource/drivers/hyperv: Enable TSC page clocksource on 32bit 2019-08-23 16:59:54 +02:00
Makefile drivers: hv: vmbus: Introduce latency testing 2019-11-21 20:10:44 -05:00
ring_buffer.c drivers: hv: vmbus: Introduce latency testing 2019-11-21 20:10:44 -05:00
vmbus_drv.c Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23) 2020-01-25 16:52:11 -05:00