02 Mar, 2016
1 commit
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Pass the channel information to the util drivers that need to defer
reading the channel while they are processing a request. This would address
the following issue reported by Vitaly:Commit 3cace4a61610 ("Drivers: hv: utils: run polling callback always in
interrupt context") removed direct *_transaction.state = HVUTIL_READY
assignments from *_handle_handshake() functions introducing the following
race: if a userspace daemon connects before we get first non-negotiation
request from the server hv_poll_channel() won't set transaction state to
HVUTIL_READY as (!channel) condition will fail, we set it to non-NULL on
the first real request from the server.Signed-off-by: K. Y. Srinivasan
Reported-by: Vitaly Kuznetsov
Signed-off-by: Greg Kroah-Hartman
02 Mar, 2015
2 commits
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When the offer is rescinded, vmbus_close() can free up the channel;
deinitialize the service before closing the channel.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Before the line vmbus_open() returns, srv->util_cb can be already running
and the variables, like util_fw_version, are needed by the srv->util_cb.So we have to make sure the variables are initialized before the vmbus_open().
CC: "K. Y. Srinivasan"
Reviewed-by: Vitaly Kuznetsov
Reviewed-by: Jason Wang
Signed-off-by: Dexuan Cui
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
10 Jul, 2014
1 commit
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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:
Signed-off-by: Greg Kroah-Hartman
19 Feb, 2014
1 commit
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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 CarpenterIn 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
30 Sep, 2013
1 commit
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We need/want the mei fixes in here so we can apply other updates that
are depending on them.Signed-off-by: Greg Kroah-Hartman
27 Sep, 2013
1 commit
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The current code does not correctly negotiate the version numbers for the util
driver when hosted on earlier hosts. The version numbers presented by this
driver were not compatible with the version numbers supported by Windows Server
2008. Fix this problem.I would like to thank Olaf Hering (ohering@suse.com) for identifying the problem.
Reported-by: Olaf Hering
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
26 Sep, 2013
1 commit
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The variable execute_shutdown is only assigned the values true and
false. Change its type to bool.The simplified semantic patch that find this problem is as
follows (http://coccinelle.lip6.fr/):@exists@
type T;
identifier b;
@@
- T
+ bool
b = ...;
... when any
b = \(true\|false\)Signed-off-by: Peter Senna Tschudin
Signed-off-by: Greg Kroah-Hartman
02 Aug, 2013
1 commit
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Remove HV_DRV_VERSION, it has no meaning for upstream drivers.
Initially it was supposed to show the "Linux Integration Services"
version, now it is not in sync anymore with the out-of-tree drivers
available from the MSFT website.The only place where a version string is still required is the KVP
command "IntegrationServicesVersion" which is handled by
tools/hv/hv_kvp_daemon.c. To satisfy such KVP request from the host pass
the current string to the daemon during KVP userland registration.Signed-off-by: Olaf Hering
Acked-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
27 Jul, 2013
1 commit
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The current code picked the highest version advertised by the host. WS2012 R2
has implemented a protocol version for KVP that is not compatible with prior
protocol versions of KVP. Fix the bug in the current code by explicitly specifying
the protocol version that the guest can support.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman
16 Mar, 2013
1 commit
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This driver supports host initiated backup of the guest. On Windows guests,
the host can generate application consistent backups using the Windows VSS
framework. On Linux, we ensure that the backup will be file system consistent.
This driver allows the host to initiate a "Freeze" operation on all the mounted
file systems in the guest. Once the mounted file systems in the guest are frozen,
the host snapshots the guest's file systems. Once this is done, the guest's file
systems are "thawed".This driver has a user-level component (daemon) that invokes the appropriate
operation on all the mounted file systems in response to the requests from
the host. The duration for which the guest is frozen is very short - a few seconds.
During this interval, the diff disk is comitted.In this version of the patch I have addressed the feedback from Olaf Herring.
Also, some of the connector related issues have been fixed.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Cc: Evgeniy Polyakov
Signed-off-by: Greg Kroah-Hartman
26 Jan, 2013
2 commits
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Execute the shutdown code in a thread context. With recent changes made to the
shutdown code, shutdown code cannot be invoked from an interrupt context.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
Use the consolidated GUID definitions in the util and balloon drivers.
Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman
18 Jan, 2013
1 commit
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Util driver is not a performance critical driver and furthermore some
util services such as KVP can only handle one outstanding message
from the host. Turn off batched reading for util drivers.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman
17 Aug, 2012
1 commit
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Add the necessary definitions for supporting the IP injection functionality.
Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Reviewed-by: Olaf Hering
Reviewed-by: Ben Hutchings
Signed-off-by: Greg Kroah-Hartman
14 May, 2012
1 commit
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The current version negotiation code is not "future proof". Fix this
by allowing each service the flexibility to either specify the highest
version it can support or it can support the highest version number
the host is offering.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman
03 Feb, 2012
1 commit
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In preparation for consolidating all KVP related defines into a single header file
that both the kernel and user level components can use, move the contents of
hv_kvp.h into hyperv.h.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman
11 Oct, 2011
2 commits
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It's a global symbol, so properly prefix it and use the proper EXPORT
value as well.Cc: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
After many years wandering the desert, it is finally time for the
Microsoft HyperV code to move out of the staging directory. Or at least
the core hyperv bus code, and the utility driver, the rest still have
some review to get through by the various subsystem maintainers.Signed-off-by: Greg Kroah-Hartman
Signed-off-by: K. Y. Srinivasan
