android_kernel_motorola_sm6375/drivers/hv
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Dexuan Cui 6059000e14 Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23)
[ Upstream commit ddc9d357b991838c2d975e8d7e4e9db26f37a7ff ]

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>
2020-08-11 15:33:38 +02:00
..
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) 2020-08-11 15:33:38 +02:00
connection.c Drivers: hv: vmbus: Always handle the VMBus messages on CPU0 2020-06-22 09:31:00 +02:00
hv.c Drivers: hv: vmbus: Always handle the VMBus messages on CPU0 2020-06-22 09:31:00 +02:00
hv_balloon.c hv_balloon: Balloon up according to request page number 2020-02-11 04:35:21 -08:00
hv_fcopy.c
hv_kvp.c
hv_snapshot.c
hv_trace.c
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_util.c
hv_utils_transport.c
hv_utils_transport.h
hyperv_vmbus.h Drivers: hv: vmbus: Always handle the VMBus messages on CPU0 2020-06-22 09:31:00 +02:00
Kconfig clocksource/drivers/hyperv: Enable TSC page clocksource on 32bit 2019-08-23 16:59:54 +02:00
Makefile
ring_buffer.c
vmbus_drv.c Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23) 2020-08-11 15:33:38 +02:00