linux.git/drivers/hv, branch v3.15.1

Drivers: hv: vmbus: Negotiate version 3.0 when running on ws2012r2 hosts

2014-04-16T21:14:07+00:00

Only ws2012r2 hosts support the ability to reconnect to the host on VMBUS. This functionality
is needed by kexec in Linux. To use this functionality we need to negotiate version 3.0 of the
VMBUS protocol.

Signed-off-by: K. Y. Srinivasan 
Cc:         [3.9+]
Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2014-04-01T23:13:21+00:00

Pull char/misc driver patches from Greg KH:
 "Here's the big char/misc driver updates for 3.15-rc1.

  Lots of various things here, including the new mcb driver subsystem.

  All of these have been in linux-next for a while"

* tag 'char-misc-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (118 commits)
  extcon: Move OF helper function to extcon core and change function name
  extcon: of: Remove unnecessary function call by using the name of device_node
  extcon: gpio: Use SIMPLE_DEV_PM_OPS macro
  extcon: palmas: Use SIMPLE_DEV_PM_OPS macro
  mei: don't use deprecated DEFINE_PCI_DEVICE_TABLE macro
  mei: amthif: fix checkpatch error
  mei: client.h fix checkpatch errors
  mei: use cl_dbg where appropriate
  mei: fix Unnecessary space after function pointer name
  mei: report consistently copy_from/to_user failures
  mei: drop pr_fmt macros
  mei: make me hw headers private to me hw.
  mei: fix memory leak of pending write cb objects
  mei: me: do not reset when less than expected data is received
  drivers: mcb: Fix build error discovered by 0-day bot
  cs5535-mfgpt: Simplify dependencies
  spmi: pm: drop bus-level PM suspend/resume routines
  spmi: pmic_arb: make selectable on ARCH_QCOM
  Drivers: hv: vmbus: Increase the limit on the number of pfns we can handle
  pch_phub: Report error writing MAC back to user
  ...

x86: hyperv: Fixup the (brain) damage caused by the irq cleanup

2014-03-05T12:42:14+00:00

Compiling last minute changes without setting the proper config
options is not really clever.

Reported-by: Fengguang Wu 
Signed-off-by: Thomas Gleixner

x86: Hyperv: Cleanup the irq mess

2014-03-04T16:37:54+00:00

The vmbus/hyperv interrupt handling is another complete trainwreck and
probably the worst of all currently in tree.

If CONFIG_HYPERV=y then the interrupt delivery to the vmbus happens
via the direct HYPERVISOR_CALLBACK_VECTOR. So far so good, but:

  The driver requests first a normal device interrupt. The only reason
  to do so is to increment the interrupt stats of that device
  interrupt. For no reason it also installs a private flow handler.

  We have proper accounting mechanisms for direct vectors, but of
  course it's too much effort to add that 5 lines of code.

  Aside of that the alloc_intr_gate() is not protected against
  reallocation which makes module reload impossible.

Solution to the problem is simple to rip out the whole mess and
implement it correctly.

First of all move all that code to arch/x86/kernel/cpu/mshyperv.c and
merily install the HYPERVISOR_CALLBACK_VECTOR with proper reallocation
protection and use the proper direct vector accounting mechanism.

Signed-off-by: Thomas Gleixner 
Acked-by: K. Y. Srinivasan 
Cc: Peter Zijlstra 
Cc: Greg Kroah-Hartman 
Cc: linuxdrivers 
Cc: x86 
Link: http://lkml.kernel.org/r/20140223212739.028307673@linutronix.de
Signed-off-by: Thomas Gleixner

vmbus: use resource for hyperv mmio region

2014-02-25T00:15:05+00:00

Use a resource for the hyperv mmio region instead of start/size
variables.  Register the region properly so it shows up in
/proc/iomem.

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

vmbus: add missing breaks

2014-02-25T00:15:05+00:00

Signed-off-by: Gerd Hoffmann 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: fcopy_open() can be static

2014-02-18T20:24:55+00:00

CC: "K. Y. Srinivasan" 
CC: "Greg Kroah-Hartman" 
Signed-off-by: Fengguang Wu 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Implement the file copy service

2014-02-18T18:53:48+00:00

Implement the file copy service for Linux guests on Hyper-V. This permits the
host to copy a file (over VMBUS) into the guest. This facility is part of
"guest integration services" supported on the Windows platform.
Here is a link that provides additional details on this functionality:

http://technet.microsoft.com/en-us/library/dn464282.aspx

In V1 version of the patch I have addressed comments from
Olaf Hering  and Dan Carpenter 

In V2 version of this patch I did some minor cleanup (making some globals
static). In V4 version of the patch I have addressed all of Olaf's
most recent set of comments/concerns.

In V5 version of the patch I had addressed Greg's most recent comments.
I would like to thank Greg for suggesting that I use misc device; it has
significantly simplified the code.

In V6 version of the patch I have cleaned up error message based on Olaf's
comments. I have also rebased the patch based on the current tip.

In this version of the patch, I have addressed the latest comments from Greg.

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

Merge 3.14-rc3 into char-misc-next

2014-02-18T16:09:40+00:00

We need the fixes here for future mei and other patches.

Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Ballon: Make pressure posting thread sleep interruptibly

2014-02-15T20:08:38+00:00

The non-interruptible sleep of the memory pressure posting thread
results in higher reported load average. Make this sleep interruptible.

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