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 i
From: Dexuan Cui
This fixes the recent commit 3b71107d73b16074afa7658f3f0fcf837aabfe24:
Drivers: hv: vmbus: Further improve CPU affiliation logic
Without the fix, reloading hv_netvsc hangs the guest.
Signed-off-by: Dexuan Cui
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/channel_mgmt.c
changes via get/set helpers with a memory barrier.
Signed-off-by: Olaf Hering
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hyperv_vmbus.h | 14 ++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 4b1eb6d
From: Olaf Hering
The "state" is used by several threads of execution.
Propagate the state to make changes visible. Also propagate context
change in kvp_on_msg.
Signed-off-by: Olaf Hering
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hv_kv
From: Olaf Hering
The "state" is used by several threads of execution.
Propagate the state to make changes visible. Also propagate context
change in vss_on_msg.
Signed-off-by: Olaf Hering
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hv_snapsho
The patch set for supporting PCI Express pass through on Hyper-V has been
posted and
is currently under review. These vmbus patches are needed for the PCI
Express pass through driver. Since these need to go through Greg's tree,
I am posting these separately here.
Jake Oshins (3):
drivers:hv: E
Oshins
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/vmbus_drv.c | 17 +
include/linux/hyperv.h |2 ++
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 0a344fa..1a45302 100644
--- a/drivers/hv/vmbus_drv.c
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hv.c|9 +
include/linux/hyperv.h |1 +
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 6341be8..a7b6c6a 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -89,9 +89,9
From: Jake Oshins
This defines the channel type for PCI front-ends in Hyper-V VMs.
Signed-off-by: Jake Oshins
Signed-off-by: K. Y. Srinivasan
---
include/linux/hyperv.h | 11 +++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/include/linux/hyperv.h b/include/linux
From: Olaf Hering
The "state" is used by several threads of execution.
Propagate the state to make changes visible. Also propagate context
change in hv_fcopy_onchannelcallback.
Without this change fcopy may hang at random points.
Signed-off-by: Olaf Hering
Signed-off-by: K. Y.
nd in case previous scan is still running
we get the message and stack dump on console.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: K. Y. Srinivasan
Tested-by: Alex Ng
Signed-off-by: K. Y. Srinivasan
---
drivers/scsi/scsi_scan.c |3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
di
Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag since we are not specifying
tags. Qlogic driver does not work correctly if the SRB_FLAGS_QUEUE_ACTION_ENABLE
is set and no action tag is specified.
Signed-off-by: K. Y. Srinivasan
Tested-by: Vivek Yadav
Reviewed-by: Long Li
---
drivers
36' messages on console. This can be
problematic for slow consoles. Introduce short_inquiry host template flag
to avoid printing error messages for such adapters.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: K. Y. Srinivasan
Tested-by: Alex Ng
Signed-off-by: K. Y. Srinivasan
---
drivers/scsi/
Some miscellaneous fixes.
K. Y. Srinivasan (1):
storvsc: Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag
Vitaly Kuznetsov (2):
scsi_scan: don't dump trace when scsi_prep_async_scan() is called
twice
scsi: introduce short_inquiry flag for broken host adapters
drivers/scsi/s
This patch set fixes a bug in the VMBUS driver that dispatches driver specific
callback as well as a bug in the KVP code.
K. Y. Srinivasan (2):
Drivers: hv: vmbus: Fix a bug in the channel callback dispatch code
Drivers: hv: util: Fix a bug in the KVP code
drivers/hv/connection.c |8
.
Make adjustments to the callback dispatch code to account for the way
non-performance critical drivers handle reading of the channel.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/hv/connection.c |8 ++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/hv
Add code to poll the channel since we process only one message
at a time and the host may not interrupt us. Also increase the
receive buffer size since some KVP messages are close to 8K bytes in size.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/hv/hv_kvp.c | 17
In this patch set I have fixed a few bugs and implemented some enhancements.
K. Y. Srinivasan (8):
Drivers: scsi: storvsc: Change the limits to reflect the values on
the host
Drivers: scsi: storvsc: Filter commands based on the storage protocol
version
Drivers: scsi: storvsc: Fix a
Going forward it is possible that some of the commands that are not currently
implemented will be implemented on future Windows hosts. Make command filtering
depend on the host version.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 11 ---
1 files changed, 8
SRB status can have additional information. Mask these out before processing
SRB status.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
Host does not handle WRITE_SAME_16; filter this command out. This patch
is required to handle large devices (greater than 2 TB disks).
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi
.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 14 +++---
1 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 759853c..d9d8051 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi
Hyper-V hosts can support multiple targets and multiple channels and larger
number of
LUNs per target. Update the code to reflect this. With this patch we can
correctly
enumerate all the paths in a multi-path storage environment.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi
On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR.
Correctly handle this.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |7 +++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi
Implement a simple abort handler. The host does not support "Abort"; just
ensure that all inflight I/Os have been accounted for.
Signed-off-by: K. Y. Srinivasan
---
drivers/scsi/storvsc_drv.c | 22 ++
1 files changed, 22 insertions(+), 0 deletions(-)
diff --git
Correctly set SRB flags for all valid I/O directions. Some IHV drivers on the
Windows host require this.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 12 +---
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers
In this patch set I have fixed a few bugs and implemented some enhancements.
In this version of the patch I have addressed comments from
Christoph Hellwig
K. Y. Srinivasan (8):
Drivers: scsi: storvsc: Change the limits to reflect the values on
the host
Drivers: scsi: storvsc: Set
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 47 +---
1 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 9969fa1..8938b13 100644
--- a
this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 17 ++---
1 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index
Correctly set SRB flags for all valid I/O directions. Some IHV drivers on the
Windows host require this.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 12 +---
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers
SRB status can have additional information. Mask these out before processing
SRB status.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |5 -
1 files changed, 4 insertions(+), 1
).
Make command filtering depend on the host version.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 16 +---
1 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers
Implement a simple abort handler. The host does not support "Abort"; just
ensure that all inflight I/Os have been accounted for.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
---
drivers/scsi/storvsc_dr
On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR.
Correctly handle this.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |7 +++
1 files changed, 7 insertions
Set cmd_per_lun to reflect value supported by the Host.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi
Set cmd_per_lun to reflect value supported by the Host.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi
In this patch set I have fixed a few bugs and implemented some enhancements.
In this version of the patch I have addressed comments from
Christoph Hellwig
K. Y. Srinivasan (7):
Drivers: scsi: storvsc: Change the limits to reflect the values on
the host
Drivers: scsi: storvsc: Set
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 47 +---
1 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 9969fa1..8938b13 100644
--- a
Correctly set SRB flags for all valid I/O directions. Some IHV drivers on the
Windows host require this. The host validates the command and SRB flags
prior to passing the command down to native driver stack.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 12
. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |7 +++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 9342ba4..29d0329 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1018,6
Set cmd_per_lun to reflect value supported by the Host.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi
On Azure, we have seen instances of unbounded I/O latencies. To deal with
this issue, implement handler that can reset the timeout. Note that the
host gaurantees that it will respond to each command that has been issued.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c
this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 17 ++---
1 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index
).
Make command filtering depend on the host version.
In this version of the patch I have addressed comments from
Christoph Hellwig
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/scsi/storvsc_drv.c | 16 +---
1 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers
Add blist flags to permit the reading of the VPD pages even when
the target may claim SPC-2 compliance. MSFT targets currently
claim SPC-2 compliance while they implement post SPC-2 features.
With this patch we can correctly handle WRITE_SAME_16 issues.
Signed-off-by: K. Y. Srinivasan
Add blist flags to permit the reading of the VPD pages even when
the target may claim SPC-2 compliance. MSFT targets currently
claim SPC-2 compliance while they implement post SPC-2 features.
With this patch we can correctly handle WRITE_SAME_16 issues.
Signed-off-by: K. Y. Srinivasan
For forwarding scenarios, it will be useful to allocate larger
sendbuf. Make the necessary adjustments to permit this.
Signed-off-by: K. Y. Srinivasan
---
drivers/net/hyperv/hyperv_net.h |2 +-
drivers/net/hyperv/netvsc.c |7 ++-
2 files changed, 3 insertions(+), 6 deletions
For forwarding scenarios, it will be useful to allocate larger
sendbuf. Make the necessary adjustments to permit this.
Signed-off-by: K. Y. Srinivasan
---
drivers/net/hyperv/hyperv_net.h |2 +-
drivers/net/hyperv/netvsc.c |7 ++-
2 files changed, 3 insertions(+), 6 deletions
effect on
throughput
beyond 16MB. Thus I have chosen 16MB here.
Increasing the sendbuf value makes a material difference in small packet
handling
In this version of the patch, based on David's feedback, I have added
additional details in the commit log.
Signed-off-by: K. Y. Srini
WS2008R2 is a supported platform and it turns out that the maximum sendbuf
size that ws2008R2 can support is only 15MB. Make the necessary
adjustment.
Signed-off-by: K. Y. Srinivasan
---
drivers/net/hyperv/hyperv_net.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a
This patch-set addresses issues with LUN hot-add and remove. When the host
notifies the guest that a scan is needed, scan the host. Also, prior to
discovering new devices that may have been added, ensure we handle the
LUN remove case first.
K. Y. Srinivasan (2):
Drivers: scsi: storvsc: In
The virtual HBA that storvsc implements can support multiple channels and
targets. So, scan the host when the host notifies that a scan is needed.
Signed-off-by: K. Y. Srinivasan
---
drivers/scsi/storvsc_drv.c | 19 +++
1 files changed, 7 insertions(+), 12 deletions(-)
diff
for an I/O to remove the device, force the discovery of
LUNs that may have been removed prior to discovering LUNs that may have
been added.
Signed-off-by: K. Y. Srinivasan
---
drivers/scsi/storvsc_drv.c | 26 ++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git
-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
---
drivers/hv/channel_mgmt.c | 75 +++-
drivers/hv/hv_kvp.c | 24 ++-
drivers/hv/hv_snapshot.c | 18 +++---
drivers/hv/hv_util.c | 21 +++--
include/linux
Each subnet string needs to be separated with a semicolon. Fix this bug.
Signed-off-by: K. Y. Srinivasan
Cc: Stable
---
tools/hv/hv_kvp_daemon.c |5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index ca9fa4d
This patch set adresses a couple of issues discovered in the balloon driver:
1. Prevent stale pressure report being posted.
2. If memory is not brought online within the allowed time,
do not roll back hot add state if hot add succeeded.
K. Y. Srinivasan (2):
Drivers: hv: balloon: Fix a bug
When we are posting pressure status, we may get interrupted and handle
the un-balloon operation. In this case just don't post the status as we
know the pressure status is stale.
Signed-off-by: K. Y. Srinivasan
Cc: Stable
---
drivers/hv/hv_balloon.c |8
1 files chang
the only
failure is that the memory is not onlined within the allowed time, we should not
be rolling back the state. Fix this bug.
Signed-off-by: K. Y. Srinivasan
Cc: Stable
---
drivers/hv/hv_balloon.c | 10 ++
1 files changed, 2 insertions(+), 8 deletions(-)
diff --git a/drivers/hv
the only
failure is that the memory is not onlined within the allowed time, we should not
be rolling back the state. Fix this bug.
Signed-off-by: K. Y. Srinivasan
Cc: Stable
---
drivers/hv/hv_balloon.c | 13 +
1 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/hv
When we are posting pressure status, we may get interrupted and handle
the un-balloon operation. In this case just don't post the status as we
know the pressure status is stale.
Signed-off-by: K. Y. Srinivasan
Cc: Stable
---
drivers/hv/hv_balloon.c |8
1 files chang
additional comments to the
patch: 0001-Drivers-hv-balloon-Fix-a-bug-in-the-hot-add-code.patch based on
the comments from Ben Hutchings .
K. Y. Srinivasan (2):
Drivers: hv: balloon: Fix a bug in the hot-add code
Drivers: hv: balloon: Do not post pressure status if interrupted
drivers/hv/hv_balloon.c
Each message sent from the guest carries with it a transaction ID.
Assign the transaction ID just before putting the message on the VMBUS.
This would help in debugging on the host side.
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hv_balloon.c |4 ++--
1 files changed, 2 insertions(+), 2
The current machinery for hot-adding memory requires having udev
rules to bring the memory segments online. Export the necessary functionality
to to bring the memory segment online without involving user space code.
Signed-off-by: K. Y. Srinivasan
---
drivers/base/memory.c |5
Leverage the newly exported functionality to bring memory online
without involving user level code.
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hv_balloon.c | 20 +++-
1 files changed, 3 insertions(+), 17 deletions(-)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv
The current machinery for hot-adding memory requires having user
level to bring the memory segments online. Export the necessary functionality
to bring the memory segment online without involving user space code.
Signed-off-by: K. Y. Srinivasan
---
drivers/base/memory.c | 35
within a driver.
K. Y. Srinivasan (2):
Drivers: base: memory: Export functionality for "in kernel" onlining
of memory
Drivers: hv: balloon: Online the hot-added memory "in context"
drivers/base/memory.c | 35 +++
drivers/hv
The channel state should be correctly set before registering the device. In the
current
code the driver probe would fail for channels that have been rescinded and
subsequently
re-offered. Fix the bug.
Signed-off-by: K. Y. Srinivasan
Cc:
---
drivers/hv/channel_mgmt.c | 14 +++---
1
thank Olaf Hering , Jan Beulich
and
H. Peter Anvin for their help in this effort.
Signed-off-by: K. Y. Srinivasan
---
arch/x86/include/uapi/asm/hyperv.h | 13 +
arch/x86/kernel/cpu/mshyperv.c | 17 +
2 files changed, 30 insertions(+), 0 deletions(-)
diff --git
. Y. Srinivasan
---
drivers/hv/connection.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index ec3b8cd..8f4743a 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -195,7 +195,10 @@ int vmbus_connect
thank Olaf Hering , Jan Beulich
and
H. Peter Anvin for their help in this effort.
In this version of the patch, I have addressed Jan's comments.
Signed-off-by: K. Y. Srinivasan
---
arch/x86/include/uapi/asm/hyperv.h | 19 +++
arch/x86/kernel/cpu/mshype
commit 666b9adc801ef012612c4e43e0f44b2cdc1979cf terminated vmbus
version negotiation incorrectly. We need to terminate the version
negotiation only if the current negotiation were to timeout.
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/connection.c |2 +-
1 files changed, 1 insertions
...@suse.com) for identifying the
problem.
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hv_kvp.c | 38 +
drivers/hv/hv_snapshot.c |6 ++--
drivers/hv/hv_util.c | 71 +++---
include/linux/hyperv.h |7 +++-
4
Add a new driver to support synthetic keyboard. On the next generation
Hyper-V guest firmware, many legacy devices will not be emulated and this
driver will be required.
I would like to thank Vojtech Pavlik for helping me with the
details of the AT keyboard driver.
Signed-off-by: K. Y
Carpenter and
Dmitry Torokhov for their detailed review of this
driver.
I have addressed all the comments of Dan and Dmitry in this version of
the patch
Signed-off-by: K. Y. Srinivasan
---
drivers/input/serio/Kconfig |7 +
drivers/input/serio/Makefile |1 +
drivers
The SD_FLUSH_TIMEOUT value is currently hardcoded. On our cloud, we
sometimes hit this timeout. I was wondering if we could make this
a module parameter. If this is acceptable, I can send you a patch for
this.
Regards,
K. Y
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