[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[kys]

From: "K. Y. Srinivasan" 

Miscellaneous fixes.

Dexuan Cui (3):
  Drivers: hv: kvp: Fix the recent regression caused by incorrect
clean-up
  Drivers: hv: kvp: Use %u to print U32
  Tools: hv: kvp: Fix a warning of buffer overflow with gcc 8.0.1

Haiyang Zhang (1):
  hv_utils: update name in struct hv_driver util_drv

K. Y. Srinivasan (1):
  Drivers: hv: vmbus: Get rid of unnecessary state in hv_context

 drivers/hv/hv.c   | 10 +++---
 drivers/hv/hv_kvp.c   | 28 +++-
 drivers/hv/hv_util.c  |  2 +-
 drivers/hv/hyperv_vmbus.h |  2 --
 tools/hv/hv_kvp_daemon.c  |  2 +-
 5 files changed, 28 insertions(+), 16 deletions(-)

-- 
2.18.0

[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[kys]

From: "K. Y. Srinivasan" 

Miscellaneous fixes.

Dexuan Cui (3):
  Drivers: hv: kvp: Fix the recent regression caused by incorrect
clean-up
  Drivers: hv: kvp: Use %u to print U32
  Tools: hv: kvp: Fix a warning of buffer overflow with gcc 8.0.1

Haiyang Zhang (1):
  hv_utils: update name in struct hv_driver util_drv

K. Y. Srinivasan (1):
  Drivers: hv: vmbus: Get rid of unnecessary state in hv_context

 drivers/hv/hv.c   | 10 +++---
 drivers/hv/hv_kvp.c   | 28 +++-
 drivers/hv/hv_util.c  |  2 +-
 drivers/hv/hyperv_vmbus.h |  2 --
 tools/hv/hv_kvp_daemon.c  |  2 +-
 5 files changed, 28 insertions(+), 16 deletions(-)

-- 
2.18.0

[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[kys]

From: "K. Y. Srinivasan" 

Miscellaneous fixes.

Dexuan Cui (2):
  vmbus: don't acquire the mutex in vmbus_hvsock_device_unregister()
  vmbus: suppress uevents for hv_sock devices

Olaf Hering (1):
  Drivers: hv: fcopy: restore correct transfer length

Stephen Hemminger (2):
  vmbus: add per-channel sysfs info
  Drivers: hv: vmbus: Expose per-channel interrupts and events counters

 Documentation/ABI/stable/sysfs-bus-vmbus |  70 +++
 drivers/hv/channel_mgmt.c|  14 ++-
 drivers/hv/connection.c  |   2 +
 drivers/hv/hv_fcopy.c|   4 +
 drivers/hv/hyperv_vmbus.h|   2 +
 drivers/hv/vmbus_drv.c   | 205 +--
 include/linux/hyperv.h   |  10 ++
 7 files changed, 290 insertions(+), 17 deletions(-)

-- 
2.14.1

[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[kys]

From: "K. Y. Srinivasan" 

Miscellaneous fixes.

Dexuan Cui (2):
  vmbus: don't acquire the mutex in vmbus_hvsock_device_unregister()
  vmbus: suppress uevents for hv_sock devices

Olaf Hering (1):
  Drivers: hv: fcopy: restore correct transfer length

Stephen Hemminger (2):
  vmbus: add per-channel sysfs info
  Drivers: hv: vmbus: Expose per-channel interrupts and events counters

 Documentation/ABI/stable/sysfs-bus-vmbus |  70 +++
 drivers/hv/channel_mgmt.c|  14 ++-
 drivers/hv/connection.c  |   2 +
 drivers/hv/hv_fcopy.c|   4 +
 drivers/hv/hyperv_vmbus.h|   2 +
 drivers/hv/vmbus_drv.c   | 205 +--
 include/linux/hyperv.h   |  10 ++
 7 files changed, 290 insertions(+), 17 deletions(-)

-- 
2.14.1

[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[kys]

From: K. Y. Srinivasan 

Miscellaneous fixes.

Alex Ng (5):
  Tools: hv: vss: Skip freezing filesystems backed by loop
  Drivers: hv: balloon: Correctly update onlined page count
  Drivers: hv: balloon: Show the max dynamic memory assigned
  Drivers: hv: balloon: Initialize last_post_time on startup
  Drivers: hv: kvp: Use MAX_ADAPTER_ID_SIZE for translating adapter id

 drivers/hv/hv_balloon.c  |   12 ++--
 drivers/hv/hv_kvp.c  |2 +-
 tools/hv/hv_vss_daemon.c |7 +++
 3 files changed, 14 insertions(+), 7 deletions(-)

[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[kys]

From: K. Y. Srinivasan 

Miscellaneous fixes.

Alex Ng (5):
  Tools: hv: vss: Skip freezing filesystems backed by loop
  Drivers: hv: balloon: Correctly update onlined page count
  Drivers: hv: balloon: Show the max dynamic memory assigned
  Drivers: hv: balloon: Initialize last_post_time on startup
  Drivers: hv: kvp: Use MAX_ADAPTER_ID_SIZE for translating adapter id

 drivers/hv/hv_balloon.c  |   12 ++--
 drivers/hv/hv_kvp.c  |2 +-
 tools/hv/hv_vss_daemon.c |7 +++
 3 files changed, 14 insertions(+), 7 deletions(-)

[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[K. Y. Srinivasan]

The Copy-VMFile cmdlet on the host may fail because the guest fcopy
driver state machine gets out of sync. This happens because the ->state
and ->context variables are accessed by the main thread and from
interrupt context. If an interrupt happens between fcopy_respond_to_host
and hv_poll_channel in fcopy_write, then hv_fcopy_onchannelcallback
called from that interrupt sees still state HVUTIL_USERSPACE_RECV. It
updates the context, but fcopy_write will not notice that update and
hv_poll_channel gets called with an empty context.  As a result
hv_fcopy_daemon gets no more data. After a timeout Copy-VMFile fails
with timeout.

In my initial testing for a fix I put a "mb()" after the last .state
change in fcopy_write. But this series implementes read/write memory
barriers as needed. Let me know if this is overdoing things.


Dexuan Cui (1):
  Drivers: hv: vmbus: fix init_vp_index() for reloading hv_netvsc

Olaf Hering (4):
  hv: add helpers to handle hv_util device state
  hv: fcopy: use wrappers to propagate state
  hv: kvp: use wrappers to propaigate state
  hv: vss: use wrappers to propagate state

 drivers/hv/channel_mgmt.c |   17 +
 drivers/hv/hv_fcopy.c |   36 
 drivers/hv/hv_kvp.c   |   39 +--
 drivers/hv/hv_snapshot.c  |   37 -
 drivers/hv/hyperv_vmbus.h |   14 ++
 5 files changed, 92 insertions(+), 51 deletions(-)

-- 
1.7.4.1

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[PATCH 0/5] Drivers: hv: Miscellaneous fixes

[K. Y. Srinivasan]

The Copy-VMFile cmdlet on the host may fail because the guest fcopy
driver state machine gets out of sync. This happens because the ->state
and ->context variables are accessed by the main thread and from
interrupt context. If an interrupt happens between fcopy_respond_to_host
and hv_poll_channel in fcopy_write, then hv_fcopy_onchannelcallback
called from that interrupt sees still state HVUTIL_USERSPACE_RECV. It
updates the context, but fcopy_write will not notice that update and
hv_poll_channel gets called with an empty context.  As a result
hv_fcopy_daemon gets no more data. After a timeout Copy-VMFile fails
with timeout.

In my initial testing for a fix I put a "mb()" after the last .state
change in fcopy_write. But this series implementes read/write memory
barriers as needed. Let me know if this is overdoing things.


Dexuan Cui (1):
  Drivers: hv: vmbus: fix init_vp_index() for reloading hv_netvsc

Olaf Hering (4):
  hv: add helpers to handle hv_util device state
  hv: fcopy: use wrappers to propagate state
  hv: kvp: use wrappers to propaigate state
  hv: vss: use wrappers to propagate state

 drivers/hv/channel_mgmt.c |   17 +
 drivers/hv/hv_fcopy.c |   36 
 drivers/hv/hv_kvp.c   |   39 +--
 drivers/hv/hv_snapshot.c  |   37 -
 drivers/hv/hyperv_vmbus.h |   14 ++
 5 files changed, 92 insertions(+), 51 deletions(-)

-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/