linux-toradex.git/drivers/hv/hv.c, branch v3.11

drivers: hv: allocate synic structures before hv_synic_init()

2013-06-24T23:24:17+00:00

We currently allocate synic structures in hv_sync_init(), but there's no way for
the driver to know about the allocation failure and it may continue to use the
uninitialized pointers. Solve this by introducing helpers for allocating and
freeing and doing the allocation before the on_each_cpu() call in
vmbus_bus_init().

Cc: Haiyang Zhang 
Signed-off-by: Jason Wang 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

driver: hv: remove cast for kmalloc return value

2013-03-15T18:22:24+00:00

remove cast for kmalloc return value.

Signed-off-by: Zhang Yanfei 
Cc: "K. Y. Srinivasan" 
Cc: Haiyang Zhang 
Cc: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: Use the new infrastructure for delivering VMBUS interrupts

2013-02-27T18:15:53+00:00

Use the infrastructure for delivering VMBUS interrupts using a
special vector. With this patch, we can now properly handle
the VMBUS interrupts that can be delivered on any CPU. Also,
turn on interrupt load balancing as well.

This patch requires the infrastructure that was implemented in the patch:
X86: Handle Hyper-V vmbus interrupts as special hypervisor interrupts

Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Cleanup and consolidate reporting of build/version info

2013-01-17T19:41:50+00:00

Now, cleanup and consolidate reporting of host and vmbus version numbers.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Capture the host build information

2013-01-17T19:41:49+00:00

Capture the host build information so it can be presented along with the
negotiated vmbus version information.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Handle vmbus interrupts concurrently on all cpus

2013-01-17T19:39:15+00:00

Vmbus interrupts are unique in that while the interrupt is delivered on a
given vector, these can be handled concurrently on different CPUs. Handle the
vmbus interrupts concurrently on all the CPUs.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Manage event tasklets on per-cpu basis

2013-01-17T19:39:15+00:00

Now that we can potentially take vmbus interrupts on any CPU, make the
tasklets per-CPU.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Get rid of the unused global signaling state

2013-01-17T19:39:15+00:00

Now that we have implemented a per-connection signaling mechanism, get rid
of the global signaling state. For hosts that don't support per-connection
signaling handle, we have moved the global state to be a per-channel state.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Setup a mapping for Hyper-V's notion cpu ID

2013-01-17T19:34:37+00:00

On win8 (ws2012), incoming vmbus interrupt load can be spread across all
available VCPUs in the guest. On a per-channel basis, the interrupts can
be bound to specific CPUs. The Linux notion of cpu ID may be different
from that of the hypervisor's. Setup a mapping structure.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Change the signature for hv_signal_event()

2013-01-17T19:34:36+00:00

In preparation for implementing a per-connection signaling framework,
change the signature of the function hv_signal_event(). The current
code uses a global handle for signaling the host.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Signed-off-by: Greg Kroah-Hartman