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| author | K. Y. Srinivasan <kys@microsoft.com> | 2017-04-30 16:21:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-18 16:55:28 +0200 |
| commit | 54a66265d6754b37fb4baf1d970ec88a6225a988 (patch) | |
| tree | 308f05e5a3e1c693fc8c5952ec2ecc942baab42e /drivers/hv/connection.c | |
| parent | 1e052a16eb2caf6727b594cad0744ccdfddf4254 (diff) | |
| download | blackbird-op-linux-54a66265d6754b37fb4baf1d970ec88a6225a988.tar.gz blackbird-op-linux-54a66265d6754b37fb4baf1d970ec88a6225a988.zip | |
Drivers: hv: vmbus: Fix rescind handling
Fix the rescind handling. This patch addresses the following rescind
scenario that is currently not handled correctly:
If a rescind were to be received while the offer is still being
peocessed, we will be blocked indefinitely since the rescind message
is handled on the same work element as the offer message. Fix this
issue.
I would like to thank Dexuan Cui <decui@microsoft.com> and
Long Li <longli@microsoft.com> for working with me on this patch.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/connection.c')
| -rw-r--r-- | drivers/hv/connection.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index a938fcfe9bc9..c2d74ee95f60 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -93,10 +93,13 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo, * all the CPUs. This is needed for kexec to work correctly where * the CPU attempting to connect may not be CPU 0. */ - if (version >= VERSION_WIN8_1) + if (version >= VERSION_WIN8_1) { msg->target_vcpu = hv_context.vp_index[smp_processor_id()]; - else + vmbus_connection.connect_cpu = smp_processor_id(); + } else { msg->target_vcpu = 0; + vmbus_connection.connect_cpu = 0; + } /* * Add to list before we send the request since we may |
